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单项选择题

Questions 20 to 22 are based on the passage you have just heard.

A.Whether the security checks were really necessary.
B.How to cope with the huge crowds of visitors to the municipal building.
C.Whether the security checks would create long queues at peak hours.
D.How to train the newly recruited security guards.
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热门试题

单项选择题A.It is a breakthrough in the study of the nerve system. B.It may stimulate scientists to make further studies. C.Its result helps understand babies’ language ability. D.Its findings are quite contrary to previous research.

A.It is a breakthrough in the study of the nerve system.
B.It may stimulate scientists to make further studies.
C.Its result helps understand babies’ language ability.
D.Its findings are quite contrary to previous research.

单项选择题A.He can’t afford to go traveling yet. B.His trip to Hawaii was not enjoyable. C.He usually checks his brakes before a trip. D.His trip to Hawaii has used up all his money.

A.He can’t afford to go traveling yet.
B.His trip to Hawaii was not enjoyable.
C.He usually checks his brakes before a trip.
D.His trip to Hawaii has used up all his money.