Scientistssayitmaybefiveyearsi

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更新 2022-09-03
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难度中等
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挑错有奖

Scientists say it may be five years ______ it is possible to test this medicine on human patients．

A．since

B．until

C．before

D．when

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A professor said the rise of the BRICS countries（金砖国家） is a/an _______ of the end of the world in the control of the USA.
A. barrier B. process C. aspect D. symptom

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难度：未知

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A new case study says Chinese companies face tough _____in the US and have a long way to go to be successful.

A．challenges

B．campaigns

C．motivations

D．dilemmas

题型：未知
难度：未知

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Lily got up at 6 o’clock　　　　，but she realized it was Sunday as soon as she prepared her school bag.

A．as possible

B．as usual

C．at present

D．at last

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难度：未知

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—How did your father　　　　smoking?
—The doctor told him to do so，and he took the advice.

A．give in

B．bring in

C．give up

D．bring up

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难度：未知

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While listening carefully, the students______ what their teacher said.

A．set down

B．turned down

C．got down

D．calmed down

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