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Welcome to the Science Museum, everyone! This stone axe _______ in South Africa and
experts can’t be exactly sure about its use.

A．had been found

B．was found

C．has been found

D．would be found

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相关试题

Since you have such good preparations, there ______ be any problem about passing the
coming job interview.

A．mustn’t	B．shan’t
C．shouldn’t	D．needn’t

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— How long do you suppose it is ______ he arrived here？
— No more than half a week.

A．when

B．before

C．after

D．since

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— Could you meet me at the airport?
— I'd like to，but I'm afraid I ______ a very important meeting when you return.

A．am attending

B．was attending

C．will be attending

D．will have attended

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Experts warn that global warming will cause extreme climate changes including more______ floods, heat waves and droughts.

A．usual

B．ordinary

C．frequent

D．common

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Premier Wen’s three-day visit to Japan, ______ as the “ice-melt” trip, has a positive effect on
Sino-Japanese relationship.

A．being intended	B．intended
C．to intend	D．having intended

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