Why are scientists studying twins、-最需题库

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1What is the main idea of the first paragraph、
A.We cannot easily change our physical appearance.
B.How we turn out depends on our parents’ genes.
C.Everyone has a physical double somewhere in the worl
D.D.Both our genes and our experiences make us who we ar
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2According to the passage, what is the main reason that the cat works miracle、
A.He is able to inspire others.
B.Patients feel sympathy for him.
C.People are amused by his appearance.
D.He has the ability to cure the ill.
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3How did Kennon help the cat move around、
A.By curing his broken back.
B.By getting him a special cart.
C.By feeding him medicines.
D.By exercising him in her backyard.
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4Why did Kennon decide to keep the cat、
A.She wanted a companion.
B.The cat’s owner abandoned him.
C.She liked the cat.
D.The cat was hopeless.
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5The underlined phrase “put down” in Paragraph 2 most probably means___________.
A.hurt
B.killed
C.refused
D.replaced
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6According to the passage, __________.
A.one in 70 twins are genetically identical
B.non-identical twins are usually not of the same sex
C.twins separated at birth behave exactly the same
D.identical twins are genetically the same
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7Which of the following is most affected by experience according the passage、
A.Eating habits.
B.Eye-sight.
C.Pain resistance.
D.Marriage patterns.
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8What does the underlined “this” in Paragraph 4 refer to、
A.Our love of sport.
B.Our attitude to risk-taking.
C.Our skill at bungee jumping.
D.Our ability to take drugs.
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9The underlined word ”scarce” in paragraph 1 most probably means_________.
A.valuable
B.rare
C.infrequent
D.missing
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10What is putting pressure on the local supply of clean water、
A.Dust from the road is making the water dirtier.
B.There are too many taps accessing the water.
C.The population of the area is growing fast.
D.The coming summer will dry up rivers and lakes.
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