超星 - 2019年6月四级真题卷1

单选题

16Questions 16 to 18 are based on the passage you have just heard

A)They help farmers keep diseases in check.
B)Many species remain unknown to scientists.
C)Only a few species cause trouble to humans.
D)They live in incredibly well-organized colonies.

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单选题

17

A)They are larger than many other species.
B)They can cause damage to people's homes.
C)They can survive a long time without water.
D)They like to form colonies in electrical units.

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单选题

18

A) Deny them access to any food.
B) Keep doors and windows shut.
C)Destroy their colonies close by.
D)Refrain from eating sugary food.

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单选题

19Questions 19 to 21 are based on the passage you have just heard.

A)The function of the human immune system.
B)The cause of various auto-immune diseases.
C)The viruses that may infect the human immune system.
D)The change in people's immune system as they get older.

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单选题

20

A)Report their illnesses.
B)Offer blood samples.
C)Act as research assistants.
D)Help to interview patients.

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单选题

21

A)Strengthening people's immunity to infection.
B)Better understanding patients' immune system.
C)Helping improve old people's health conditions.
D)Further reducing old patients' medical expenses.

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单选题

22Questions 22 to 25 are based on the passage you have just heard

A. .A)His students had trouble getting on with each other.
B)A lot of kids stayed at school to do their homework.
C)His students were struggling to follow his lessons.
D)A group of kids were playing chess after school.

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单选题

23

A)Visit a chess team in Nashville.
B)Join the school's chess team.
C)Participate in a national chess competition.
D)Receive training for a chess competition.

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单选题

24

A)Most of them come from low-income families.
B)Many have become national chess champions.
C) A couple of them have got involved in crimes.
D)Many became chess coaches after graduation.

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单选题

25

A)Actions speak louder than words.
B)Think twice before taking action.
C)Translate their words into action.
D)Take action before it gets too late.

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