A.a(chǎn)nimals’ lives in laboratories |
B.cruel experiments on animals |
C.the needs of animals in labs |
D.facilities used to care for animals |
A.①③④ | B.②③⑤ | C.②④⑤ | D.①④⑤ |
A.some companies have found ways to replace animal tests |
B.a(chǎn)nimals normally get no strange diseases |
C.a(chǎn)nimals are happy in labs with better facilities |
D.painkillers can change the results of experiments |
A.positive | B.worried | C.satisfied | D.disappointed |
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A.the gradual weakness of fresco painting |
B.oils’ power or influence over watercolour |
C.the discovery of watercolour in England |
D.the start and development of watercolour |
A.watercolour was softer, and thus better |
B.oil painting lasted longer, and was better |
C.watercolour wasn’t fit for finished works |
D.watercolour was too hard to use in any works |
A.it was easy to use outdoors | B.it was a strong medium |
C.it was extremely bright in colour | D.it was suited to popular tastes |
A.The works of famous US watercolour artists | B.Modern American oil painters |
C.The weakness of oils as popular paints | D.Techniques of producing watercolour |
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A.emphasize the importance of exercising the brain |
B.a(chǎn)nalyze the difference between different age groups on the loss of memory |
C.reveal the decrease in mental ability of young adults as well as older adults |
D.introduce effective ways to improve memory |
A.they lose their memory at a slower rate |
B.they rarely realize they have memory problems |
C.their brains can store much more information |
D.a(chǎn)ll of the above |
A.Not until the loss of memory affects their daily activities, do people notice the decrease in their mental abilities. |
B.People begin to lose memory in their twenties. |
C.Older people tend to remember false information as being true. |
D.Younger people find it easier to remember the information that is proven false. |
A.mental performance can be improved |
B.mental ability is determined entirely by brain structure |
C.people of different ages use different parts of the brain for memorizing |
D.different parts of the brain are responsible for different mental activities |
A.The Mysterious Brain | B.The Ability to Forget |
C.Memory Reduction | D.Mental Performance |
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A.DNA is a kind of gene. |
B.DNA is a substance that makes up genes. |
C.DNA is the basic unit of heredity. |
D.DNA is a measure to protect crime. |
A.Plants, animals and human beings have the same genes. |
B.Half people inherit all genes from their mother, others from their father. |
C.Genes decide the trees shapes, the cats’ fur color and our eyes’ color as well. |
D.Genes will give you a code when you need them. |
A.Genes lining up on strands called chromosomes are in the center of cells. |
B.Genes hide in everything alive in your body. |
C.Genes can be nowhere but in your mind, controlling all your actions. |
D.Genes travel in your body and help cope skin, muscle, and eyes. |
A.first saw inherited patterns in people |
B.was interested in why plants were different |
C.first called the units of heredity from parents genes |
D.was the first who discovered genes |
A.scientists were less intelligent than monks in 1900s |
B.some genes are bad and can cause diseases |
C.we don’t need to worry about genetic diseases any longer |
D.the discovery of genes may be of great help in our daily life |
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A.were satisfied with their own cup |
B.were angry about the broken cups they had been given |
C.a(chǎn)sked the teacher to get new cups for them |
D.were curious about the difference between the cups |
A.the teacher prepared different tea cups for each student |
B.the teacher should have given the students the same cups |
C.the teacher made the tea cups different by mistake. |
D.each student took their time to choose a cup they liked |
A.should try different ways of life |
B.shouldn’t focus on envy others’ physical circumstances |
C.can never change their physical circumstances |
D.should work hard for a better life |
A.life is hard and boring for everyone |
B.it is strange to be envious of the lives of others |
C.everyone should learn to enjoy his own life |
D.people act differently in different circumstances |
A.More than tea in a cup | B.The value of tea |
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A.African children are very poor. | B.some children are unlucky. |
C.there are many kinds of education. | D.schools are of great importance. |
A.we have to learn from the people around us. | B.the school is not important at all. |
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A.what people encourage him/ her to do. | B.the teachings of those he / she meets. |
C.thinking about it when growing up. | D.trying and practising things. |
A.everyone gets education from the day he or she was born. |
B.different classes of people receive different kinds of education. |
C.the school is absolutely necessary if one wants to understand the world. |
D.everyone will find out what he or she is good at. |
A.the school is not so important as our living places. |
B.the school enables us to understand the world in other ways. |
C.the school teaches us things which are useless at home. |
D.the school cannot prepare us for our daily lives. |
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A.took all his freedom from him |
B.decided never to trust him again |
C.forbade him to stay alone overnight |
D.a(chǎn)rranged him to stay at home. |
A.parents don’t trust their child as they should |
B.defendants are usually proved not guilty in court |
C.parents have too much trust in their child |
D.some children are founded guilty in court |
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B.it is not easy to deal with the problem of lying as parents |
C.there are effective ways to prevent children from lying |
D.children will stop telling lies as they grow up |
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A.He wants to tell us something about “ABC”. |
B.He wants to show that Chinese are well respected in America. |
C.He wants to tell us some knowledge about the English language. |
D.He wants to introduce the American culture to us. |
A.their bodies are white inside but yellow outside |
B.they think like Westerners but look like Chinese |
C.they were born in China but go to study in America |
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A.someone is bleeding | B.someone is choking |
C.someone is lost | D.someone is attacked by a bear |
A.keep a sense of humor | B.call 911 and leave the line open |
C.use your hand our clean cotton | D.lie down with your hands behind your neck |
A.stop bleeding | B.reduce stress |
C.lose your foot | D.cause breathlessness |
A.survive the emergencies | B.a(chǎn)void a bear attack |
C.deal with a choke | D.find our way |
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