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科目： 來源：不詳 題型：單選題

This kind of glasses manufactured by experienced craftsmen _____ comfortably.
A．is wornB．wearsC．wearingD．a(chǎn)re worn

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科目： 來源：不詳 題型：單選題

The fifth generation computers, with artificial intelligence, _____ and perfected now.
A．developed B．have developed
C．a(chǎn)re being developed D．will have been developed

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科目： 來源：不詳 題型：單選題

Active reading will result in a better understanding of what _____.
A．is being readB．to be readC．to readD．being read

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科目： 來源：不詳 題型：單選題

It's reported that by the end of this month the output of cement in the factory _____ by about 10%.
A．will have risen B．has risen C．has been risenD．will be rising

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科目： 來源：不詳 題型：單選題

Until then, his family _____ from him for six months.
A．didn't hearB．hasn't been hearing
C．hasn't heardD．hadn't heard

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科目： 來源：不詳 題型：單選題

–It must have been lots of fun riding round in a car.
–Yes, you know this was the first time that _____ round in my own car.
A．I rodeB．I should have ridden
C．I’ve been ridingD．I’d ridden

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科目： 來源：不詳 題型：單選題

As _____ announced in today's papers, the Shanghai Export Commoditiser Fair is also open on Sunday.
A．beingB．isC．to beD．been

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科目： 來源：不詳 題型：單選題

Once environment damage _____, it takes many years for the system to recover.
A．has doneB．is to doC．doesD．is done

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科目： 來源：不詳 題型：單選題

The last half of the nineteenth century _____ the steady improvement in the means of travel. 
A．has witnessedB．was witnessedC．witnessedD．is witnessed

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科目： 來源：不詳 題型：單選題

The meeting was _____ at ten o’clock, but the chairman hadn’t turned up by eleven o’clock.
A．startB．have startedC．be startingD．be started

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