21. The fifth generation computers， with artificial intelligence， _C_ and perfected now.
A) developed B have developed C are being developed D will have been developed
22. This ticket _C_ you to a free meal in our new restaurant.
A gives B grants C entitles D credits
A，B兩項(xiàng)都要加雙賓語，結(jié)構(gòu)為：gives / grants sb. sth.
entitle sb. to sth. 使某人有權(quán)得到某物; credit A to B 相信A是由B造成的。
相信飛機(jī)失事是由飛行員錯(cuò)誤造成的。 Credit the crash to the pilot’s mistake.
crash 墜落，墜毀(專指飛機(jī)失事); collision 碰撞(強(qiáng)調(diào)兩個(gè)物體碰撞，如火車、汽車等)。
we are sorry， very sorry， terribly sorry， awfully sorry.
23. You _D_ her in her office last Friday; she’s been out of town for two weeks.
A needn’t have seen B must have seen
C might have seen D can’t have seen
24. That was so serious a matter that I had no choice but _D_ the police.
A called in B calling in C call in D to call in
have no choice but to do sth. 別無選擇，只能做。..
25. She was so _B_ in her job that she didn’t hear anybody knocking at the door.
A attracted B absorbed C drawn D concentrated
be attracted by 被…所吸引; be absorbed in 全神貫注(專注)于做…
be drawn in 被誘騙(誘使)做。.. ; concentrate on 專注于。
I was simply drawn in. 我是被誘騙上鉤的。
27. At first， the speaker was referring to the problem of pollution in the country， but halfway in her speech， she suddenly _B_ to another subject.
A committed B switched C favoured D transmitted
switch to another subject 轉(zhuǎn)換話題; switch to another channel 轉(zhuǎn)換頻道。
28. It is politely requested by the hotel management that radios _C_ after 11 o’clock at night. [虛擬語氣]
A were not played B not to play C not be played D did not play
29. Although I like the appearance of the house， what really made me decide to buy it was the beautiful _D_ through the window.
A vision B look C picture D view
view n. 景色，風(fēng)景，視野，視域。
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