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40. —I didn’t ask for the name list. Why ______ on my desk?

—I put it there just now in case you needed it.(www.hz123456.com)

A. does it land           B. has it landed          C. will it land            D. had it landed

分析：B。I didn’t ask for the name list用的是一般過去時(shí)，因?yàn)檫@是在陳述過去的事實(shí)；而 Why has it landed on my desk 用的是現(xiàn)在完成時(shí)，因?yàn)檎f話者需要強(qiáng)調(diào)影響或結(jié)果，即自己并沒有向人要這份名單，但這份名單卻放在了自己的桌上。又如：

A large number of books have been stolen from the library. 圖書館遺失了很多書。

There have been a lot of accidents in the fog. I read about one this morning. 這大霧天已發(fā)生了很多事故。今天上午我就看到其中一宗的報(bào)道。

41. It is the most instructive lecture that I ______ since I came to this school. 

A. attended               B. had attended          C. are attended          D. have attended

分析：D。本來當(dāng)一個(gè)受最高級(jí)形容詞修飾的名詞受到定語從句的修飾時(shí)，該定語從句既可用一般過去時(shí)，也可用現(xiàn)在完成時(shí)，但由于其后接了一個(gè)since引導(dǎo)的時(shí)間狀語從句，故空格處應(yīng)填現(xiàn)在完成時(shí)。句意為：自從我到這個(gè)學(xué)校以來，這是我所聽到的最有教育意義的演講。又如：

I’ve loved you ever since I met you. 自從我見到你，我就一直愛你。

He’s one of the company’s golden boys; sales have doubled since he took over as marketing director. 他是該公司非常成功的小伙，自他擔(dān)任市場部主任以來，銷售額已翻了一番。

42. In the last few years thousands of films ______ allover the word.

A. have produced                                      B. have been produced

C. are producing                                        D. are being produced

分析：B。in the last few years 這類時(shí)間狀語通常要與現(xiàn)在完成時(shí)連用。又如：

In the last few years, prices have fallen sharply. 在過去的幾年中，價(jià)格已急劇下降了。

Science has made great advances in the last fifty years. 在過去的50年中，科學(xué)進(jìn)步得很快。

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