26. It is difficult to do some of the experiments ________ in our physics textbo

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26. It is difficult to do some of the experiments ________ in our physics textbooks.

A．to describe

B．describing

C．described

D．being described

答案

解析

略

举一反三

31. ________ each other for long, the two brothers decided to meet soon.

A．Not having seen

B．Not seen

C．Having not seen

D．Not seeing

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25．________ of such a long movie, the little boy turned to his favourite music.

A．Having tired

B．Tiring

C．To tire

D．Tired

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27．The boy _______ in the bed ______to his friend that a cock laid an egg yesterday.

A．lay; lay

B．lying; lay

C．lying; lied

D．lied; lying

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22．After playing in the park for a few hours, the pupils gathered under trees _______shade and
________ down to eat their picnic lunch.

A．provided; sit

B．provided; sat

C．providing; sitting

D．providing; sat

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32.An air France jet is reported________in the Atlantic Ocean with 228 people aboard，the airline’s worst disaster in its 75-year history．

A．to have crashed	B．to have been crashed
C．having crashed	D．having been crashed

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