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科目： 來源：不詳 題型：單選題

The first few years in the 21st century ______ the rapid rise of China as a world economic power.
A．witnessB．has witnessedC．will witness D．have witnessed

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科目： 來源：不詳 題型：單選題

With more forests being destroyed in that area, huge quantities of land _______ deserts each year.
A．has been turned into B．had been turned into
C．is being turned into D．a(chǎn)re being turned into

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科目： 來源：不詳 題型：單選題

The new dictionaries are very useful. They _______ well and _______ already.
A．sell; have been sold out
B．sold; had sold out
C．sell; sell out
D．a(chǎn)re sold; have been sold out

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科目： 來源：不詳 題型：單選題

The new generation of computers, with artificial intelligence, _______and perfected now.
A．a(chǎn)re being developedB．have developed
C．developedD．will develop

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科目： 來源：不詳 題型：單選題

---John, why are you so upset?
---I­­­      my cell phone all morning but it is nowhere to be found.
A．a(chǎn)m looking forB．have looked for
C．have been looking forD．had looked for

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科目： 來源：不詳 題型：單選題

Sun Yang, a young Chinese swimming talent,       several gold medals before the 2012 London Olympics.
A．wonB．has wonC．had wonD．were to win

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科目： 來源：不詳 題型：單選題

I will visit you if Father ______ me.
A．let B．lets C．is letting D．will let

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科目： 來源：不詳 題型：單選題

My brother wants to work in the factory which _________ now.
A．is buildingB．has been builtC．is being builtD．is to be built

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科目： 來源：不詳 題型：單選題

They are living with their parents for the moment because their own house _________.
A．is being builtB．has been rebuiltC．is rebuiltD．has rebuilt

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科目： 來源：不詳 題型：單選題

All the scientific evidence ______ that increasing use of carbon dioxide ______ the rise of the earth’s temperature.
A．show; result inB．shows; result from
C．shows; results inD．shows; results from

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