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1801
people invented toothpaste to keep teeth clean
people invented toothpaste to keep toothbrush clean
1
cleaning toothbrush doesn't need toothpaste
toothbrush cleanliness is important for the health of the teeth
toothpaste are produced in factories
A
1802
you can buy drinks from vending machines without paying money
you can buy drinks from vending machines without communicating with cashiers
0
the variety of drinks are limited in vending machines
vending machines are the result of technology development
drinks in vending machines are not free
C
1803
movie stars often photograph others in public
movie stars are often photographed by others in public
0
stars don't know how to photograph
it's weird for stars to photograph others
stars don't appear in public
B
1804
it seems my joke is funny because nobody laughed
it seems my joke is funny because everybody laughed
0
a funny joke should make people laugh
different people will have different feelings about the same joke
telling a boring joke is embarrassing
A
1805
you need to be careful of sharks when you swim in the ocean
you need to be careful of sharks when you swim in the swimming pool
1
sharks can kill people easily in water
swimming in the swimming pool is safe generally
sharks don't live in the swimming pool
C
1806
I finished my work while I going to sleep
I finished my work before I going to sleep
0
you may feel difficult to fall asleep when you have unfinished work
sometimes people dream that they were working
people can't do anything else when they are sleeping
C
1807
I can't afford the flight ticket from China to the US, so I decided to take ship
I can't afford the flight ticket from China to the US, so I decided to walk
1
tickets from China to the US are not expensive in spring
you can only go to America by swimming
the distance between China and America is too long to walk
C
1808
animals in the Acrobatic Troupe receive wages every day
animals in the Acrobatic Troupe are fed every day
0
animals help the Acrobatic Troupe earn a lot of money
money is useless to animals
animals should be treated fairly
B
1809
teammates are here to work with you in teamwork
teammates are here to encourage you in teamwork
1
everyone on the team needs to take on the work
encouraging each other can create a good team atmosphere
teammates can become good friends
A
1810
the teacher was very angry that I was late for school again and again
the teacher was very cheerful that I was late for school again and again
1
being late for school is a violation of regulations
insisting on doing one thing is very worthwhile
teachers don't care about what students do
A
1811
girls wear skirts in winter for beauty
girls wear skirts in winter for warmth
1
skirts are inefficient in keeping warm
wearing skirts is more and more common in winter nowadays
skirts are suitable for girls very much
A
1812
driving a car is a good choice to enjoy your stay at home
reading books is a good choice to enjoy your stay at home
0
you can drive cars in many video games when you stay at home
most people don't have big enough houses to drive a car
home is the most comfortable place for most people
B
1813
he scored a crucial goal by hand in a soccer match
he scored a crucial goal by head in a soccer match
0
hands can't touch the ball in a soccer match
playing soccer is a group sport
players who scored a goal are the heroes of the team
A
1814
we built street lamps to provide a public service
we built street lamps to provide a personal service
1
street lamps were built by the government
street lamps light for everyone
street lamps only light in the evening
B
1815
crops can't live without farmers
crops can't live without the sun
0
if all the crops died then humans can't live
plants can grow on their own without human intervention
crops can grow better with farmers' help
B
1816
I was very scared to see old friends abroad
I was very surprised to see old friends abroad
0
when we feel scared we should run away immediately
we should be careful when we are abroad
seeing old friends is a happy thing
C
1817
Alice broke down when the situation was hopeful
Alice broke down when the situation was hopeless
0
when someone else broke down we should try to comfort him
people don't need to feel upset in a hopeful situation
the situation won't be hopeful if we do nothing
B
1818
ice cream is more popular in summer than in winter
ice cream is more popular in winter than in summer
1
ice cream has been very popular for hundreds of years
not every place on the earth has different seasons
it is too cold to eat ice cream in winter
C
1819
my boss checks read messages carefully every day
my boss checks unread emails carefully every day
0
read messages are messages that have already been checked before
the email is a useful tool for remote communication
the boss prefers to communicate face to face
A
1820
we are vaccinated for the cure of the disease
we are vaccinated for disease prevention
0
most of us were vaccinated when we were children
some diseases still cannot be cured
vaccine can only prevent disease
C
1821
I bought a pan for drinking fresh juice
I bought a juicer for drinking fresh juice
0
the pan can't squeeze the juice contained in the fruit
the capacity of the pan is not big enough
fresh juice is good for health
A
1822
taking summer vacation caused lots of stress
taking final exams caused lots of stress
0
preparing for the holidays is very troublesome
taking a vacation is very relaxing
taking a vacation can relieve stress
B
1823
clues can lead you to the answer
disguise can lead you to the answer
1
to find the answer you can only rely on yourself
disguise covers up the answer
the process of finding answers is interesting
B
1824
you can definitely cook food well by following a recipe
you may cook food well by following a recipe
0
recipes can only increase your chances of cooking food well
everyone can learn how to cook food well
recipes can be bought online
A
1825
the company fired some employees because of continued losses
the company hired more employees because of continued losses
1
hiring employees will increase the company's losses
the company will bankrupt if it can't stop the loss in time
employees can help the company earn more money
A
1826
the deaf man can't hear me yelling
the blind man can't hear me yelling
1
we should lend a helping hand to the blind man
yelling at others is very rude
blind men can't see but they can hear the sound
C
1827
I'm waiting for a clear night to observe stars
I'm waiting for a cloudy night to observe stars
1
the weather at night influences the observation of the stars greatly
clouds will block the sight of observation of the stars
stars can't be seen in downtown
B
1828
building workers risk injury by not wearing safety helmets
building workers risk injury by not wearing baseball caps
1
the building worker is not a safe job
building workers like wearing baseball caps in their spare time
baseball caps are useless in protection of the head
C
1829
buying presents requires love and money
buying presents requires love or money
1
you can't buy presents without money
sometimes love is more valuable than money
presents are often used to show love
A
1830
going to the zoo is for being seen
going to the zoo is for seeing animals
0
zoo visitors' attention is all on the animals
animals can see the visitors too
the zoo is a suitable place for the family activity
A
1831
the horses water the cowboy everyday
a cowboy waters the horses everyday
0
cowboys can drink water by themselves
watering the cowboy only need one horse
the horses and the cowboy love each other
A
1832
people expect enjoyment when they go to the cinema
people expect boredom when they go to the cinema
1
some films are really boring
people will try to find things to do when they feel boring
people go to the cinema for fun
C
1833
Bob sang a picture yesterday
Bob painted a picture yesterday
0
a picture is very difficult to sing
a person can both be a singer and painter
only songs can be sung
C
1834
paying by credit card is for not paying money
paying by credit card is for not carrying cash
0
the price doesn't change when you pay by credit card
you can buy more things if have several credit cards
using credit cards too frequently is not a good habit for a young man
A
1835
you need an audience if you want to share your story
you need a dog if you want to share your story
1
dogs can't understand what humans say
dogs will bark to strangers
dogs can make people no longer feel lonely
A
1836
the players will buy a cup of beer before the basketball game begins
the audience will buy a cup of beer before the basketball game begins
0
drinking before the game will make the player performs worse
drinking is a common behavior when people are under pressure
playing basketball will make players thirst
A
1837
I need to say goodbye to people on TV when I finish watching the TV show
I need to turn off the TV when I finish watching the TV show
0
people on TV can't communicate with the audience
saying goodbye when you are going to leave is a good manner
we shouldn't spend too much time in watching TV
A
1838
goods can be transported by plane
goods can be transported by wind
1
goods need to be protected well during transportation
the wind can move a lot of things
humans can't control the wind to transport goods
C
1839
the ship hit the submarine yesterday
the ship hit the train yesterday
1
ships move much slower than the train
ships move in the water while the train moves in the land
traffic accident is terrible
B
1840
I can lift the gym easily
I can lift gym equipment easily
0
people lift many things in the gym
a gym is too heavy for humans to lift
excessive exercise is harmful to the body
B
1841
meeting my friends is for business
meeting my friends is for pleasure
0
most friends meetings occur during the free time
we do business for money
friends aren't those doing business with you
C
1842
when you borrowed a car you can sell it to others
when you borrowed a car you can show it to others
0
we sell our things for money
only good friends will lend their cars to you
you don't own the thing you borrowed
C
1843
I had plastic surgery in the hospital
I had plastic surgery in the pharmacy
1
plastic surgery is more expensive than drugs
we need to go to the pharmacy in order to cure our diseases
the pharmacy doesn't have equipment to do surgery
C
1844
fortunately the fat man lost weight by working hard
fortunately the fat man lost fingers by working hard
1
losing fingers is not a fortunate thing
you can succeed as long as you work hard
we shouldn't discriminate against fat men
A
1845
couples would divorce if they believed each other
couples would divorce if they betrayed each other
0
couples believed each other would continue to live together
divorce breaks up a lot of families
divorce requires the consent of the judge
A
1846
I stop eating salt food to lose weight
I stop eating sweet food to lose weight
0
too much salt intake can cause health problems
salt food has little to do with gaining weight
the key of losing weight is persistence
B
1847
the weather can be either sweet or salt in China
the weather can be either cool or warm in China
0
the weather can't be tasted
seasonal changes can affect people's lives
there are no obvious seasonal changes in some places
A
1848
adults change clothes according to the weather every day
adults change clothes according to their height every day
1
many people are very concerned about their height
nobody change clothes every day
the height of an adult basically doesn't change
C
1849
you can use ink to write things
you can use a link to write things
1
link is not a material object and can't be touched
if we click a link we may see things written by others
more and more people write things on the computer
A
1850
museum exhibits artifacts for everyone to learn
museum exhibits artifacts for sale
1
the museum needs funds for daily operations
nobody can buy artifacts in the museum
artifacts in museum are treasure
B
1851
the alarm ringing announced that the class was over
the bell ringing announced that the class was over
0
the alarm ringing announces emergency
when the class is over, students will go out of the classroom
when the class is over, students will run out of the classroom
A
1852
passengers need to undergo a rigorous safety check before boarding the plane
passengers need to undergo a rigorous safety check before taking a taxi
1
people take a taxi very frequently
safety check before taking a taxi is not rigorous
safety check before taking a taxi is meaningless
C
1853
you can use money to buy some products to live longer
you can use money to buy some health to live longer
1
people get better treatment can live longer
rich people can buy almost everything
health can't be bought
C
1854
studying requires violence
studying requires patience
0
violence can't help you learn knowledge
we need proper violence to protect ourselves
you need to have many good qualities to study well
A
1855
we used optical microscopes to see cells in science class
we used optical microscopes to see atoms in science class
1
using microscope need to be taught to students
we can learn knowledge about atoms in science textbooks
atoms are so small that it's impossible to see them by using optical microscopes
C
1856
designers show outdated clothes in a fashion show
designers show avant-garde clothes in a fashion show
0
a fashion show is very artistic
some outdated clothes can give designers some inspirations
the fashion show is held to exhibit the latest achievements
C
1857
the young man offered his seat to the old lady on the bus
the driver offered his seat to the old lady on the bus
1
the seat belongs to the person who gets it first
drivers need to sit in their seat to drive the bus
old people should be taken care of by others in public
B
1858
I jumped into the fire to cool myself
I jumped into the water to cool myself
0
we do cool things to show off
when you are on fire you need to find something to cool yourself immediately
the fire is too hot to cool anything
C
1859
my father sold the best products to become the best salesman
my father sold the best salesmen to become the best product
1
products and salesmen often appear together
humans can't be sold
nobody buy products from salesmen now
B
1860
I washed my computers twice a week
I washed my clothes twice a week
0
computers will be damaged if they are washed
a person can only have one computer
computers will never get dirty
A
1861
I used to step on the mountain to get the sugar on the op of the cupboard
I used to step on the stone to get the sugar on the top of the cupboard
0
it's wrong to steal sugar
mountains are much more higher than cupboards
it's impossible to know where the sugar is if parents hide it
B
1862
a wall is the boundary of a house
a wall is the entrance of a house
1
a house can't be built without walls
people can't go through the wall
a house can have several entrances
B
1863
we built a factory to produce creative ideas
we built a factory to produce creative goods
0
only rich people can build factories
producing creative ideas is very expensive and difficult
good ideas can only come out from your mind
C
1864
we use the microscope to learn about the microcosm
we use the microscope to learn about the universe
1
we don't need any tools to learn about the universe
the microscope is used to magnify tiny things
there are still many unknown things about the universe
B
1865
we can find first class airplane seats in the wings of a plane
we can find first class airplane seats in the front of a plane
0
we can have the best view sitting in the wings of planes
passengers will die if they sit outside the plane
the first class airplane seats usually have higher prices
B
1866
when a relative dies, we held a funeral for him
when a relative dies, we held a party for him
1
everyone will die
we only hold parties for people we love
party is held to celebrate happy things
C
1867
a bed can rest a pillow
a bed can rest a person
0
we need a bed first if we want to use our pillows
pillows don't have lives and can't feel rest
we can put several pillows on a bed
B
1868
parents will praise children when kids did something well
children will praise parents when kids did something well
1
the person being praised should be the one who did the good thing
a person becomes more confident after being encouraged
no one will praise adults
A
1869
professional soccer players earn money by selling footballs
professional soccer players earn money by playing football games
0
we need new footballs when the previous one was broken
football players kick footballs but don't sell them
the best professional soccer player earns a lot of money
B
1870
animals are pets
pets are animals
0
many animals haven't been tamed
people who live alone often want to have pets
humans are also animals
A
1871
we grow Christmas trees in December every year
we buy Christmas trees in December every year
0
many countries don't celebrate Christmas day
Christmas trees are artificial products
Christmas trees are very rare
B
1872
sun bathing removes dirt from the body
water bathing removes dirt from the body
0
bathing can also make people feel relaxed
sun bathing can't make things cleaner
sun bathing is common on the beach
B
1873
I bought a ticket for the train I took
I bought a ticket for the taxi I took
1
every taxi has a driver
taxi fare is more expensive than bus fare
taking a taxi doesn't require tickets
C
1874
he was fined for smoking in his home
he was fined for smoking in the airplane
0
people have the freedom to smoke in their home
smoking is illegal
smoking is harmful to your health no matter where you smoke
A
1875
we took notes in class for recording what we were thinking
we took notes in class for not forgetting the knowledge
0
we can also get high scores without taking notes
notes taken in the class record what the teachers said
we shouldn't think anything else when we are in class
B
1876
I want to find a quiet place to have a sleep
I want to find a noisy place to have a sleep
1
it's difficult to fall asleep in a noisy place
usually people sleep in a fixed place
sleeping in public is rude in some situations
A
1877
People open their doors when they go out of the home
People close their doors when they go out of the home
0
doors usually are locked from outside
people usually unlock doors before entering the home
things in an opening house are easy to be stolen
C
1878
People can talk chat with living people
People can chat with the dead
1
Dead people can't hear and talk
The dead cannot watch
Everyone on earth must die
A
1879
Sweat will be secreted when the sand touches eyes
Tears will be secreted when the sand touches eyes
0
there are no sweat glands in the eyes
People usually have two eyes
People's skin will sweat after running
A
1880
People usually put curtains on the windows
People usually put curtains on the walls
1
People can put wallpapers on the wall
Walls are usually opaque
Curtains usually have beautiful patterns
B
1881
People usually roast meat with cold water
People usually roast meat over fire
0
it usually takes a long time to boil meat in water
People can boil meat with hot water
People need high temperature to roast meat
C
1882
People usually enter the park from the entrance
People usually enter the park from the fence
1
Parks are usually a good place for leisure and recreation
Some parks are inaccessible to ordinary people
People shouldn't go through the fence
C
1883
People usually like to wear oversize clothes
People usually like to wear fitted clothes
0
wearing oversize clothes makes people uncomfortable
People usually like to wear beautiful clothes
Fat people usually wear big clothes
A
1884
People should abide by the contract
People should break the contract
1
Contracts are usually concluded by more than one person
companies should fulfill certain contractual obligations
Those who break the contract will be punished
C
1885
Rats can't bite metal furniture
Rats can't bite wood furniture
1
Rats usually like to eat nuts
Rat's teeth are harder than wood
Most rats are afraid of cats
B
1886
Sheep usually like wolves
Sheep usually hate wolves
0
Cows and sheep are herbivores
Wolves eat sheep
The wolf has a terror of fire
B
1887
College students usually learn the same courses
College students can learn different courses
0
Most college students are boarders
College students have compulsory and optional courses
College students have different majors
C
1888
Eating a lot of instant noodles is healthy
Eating a lot of instant noodles is unhealthy
0
instant noddles should be put into hot water before being eaten
Noodles are usually thin strips
instant noodles are junk food
C
1889
Programmers usually don't use computers
Programmers often use computers
0
programmers need to sit for a long time
Programmers need computers to programme
programmers always wear casual clothes
B
1890
if you fail the exam you should cheat next time
if you fail the exam you should study harder for next time
0
cheating will make you sad
you will spend a lot of time preparing for cheating
cheating is bad and prohibited
C
1891
I should indulge myself when I fail
I should refresh myself when I fail
0
indulging yourself can make you happy for a while
weakness is not good quality
a failure is acceptable
B
1892
mom cooks the fried egg once a week for me
mom cooks the fried tiger meat once a week for me
1
tiger meat is so hard that the human can't bite them
human rarely eats the tiger meat
tiger meat tastes bad
B
1893
sprinters' legs are usually strong
sprinters' arms are usually strong
1
what is used in the sprint are legs instead of arms
sprinters' arms are short because people with long arms take disadvantage in sprinting
people with strong arms always participate in the boxing match
A
1894
I can take part in the soccer game in formal clothes
I can take part in the soccer game in athletic clothes
0
formal clothes don't keep heat
formal clothes are expensive
formal clothes are not designed for sports at all
C
1895
we can travel on the sea by boat
we can travel on the sea by train
1
there is not enough gasoline on the sea
the train can't float on water
Fire extinguishes in water
B
1896
chickens' eggs is delicious
pigs' eggs are delicious
1
pigs will protect their offsprings
eating animals' eggs is immoral
pigs are mammals
C
1897
we can eat noodles with knives
we can eat noodles with forks
0
some knives are heavy
we can't access noddles from bows by knives conveniently
knives are dangerous
B
1898
birds' milk is nutrient
goats' milk is nutrient
0
birds are not mammals
birds' milk is junk food
some birds are human's friends
A
1899
People can make wires from metal
People can make wires from plastics
1
Plastics cannot conduct electricity
People can make cups from plastic
plastic will pollute the soil
A
1900
People can read newspapers to know what has happened recently
People can read newspapers to know what will happen in the future
1
The future is unpredictable
people can advertise for staff in a newspaper
Newspapers usually cover important things
A