4．设为两个不重合的平面， 为两两不重合的直线，给出下列四个命题：

　①若　　　　 ②若

③若　　　　 ④

其中真命题的序号是　　　　　　　　　　　 (　　 )

A.①③④ B.①②③ C.①③　　 D.②④

3． 若是的三边，直线与圆相离，则一定是 　　　　　　　　　　　　　　　　　　　　　　　　　　　(　　 )

A.锐角三角形　　 　B.直角三角形　　　 　C.钝角三角形　 　D.等边三角形

2．已知，若为纯虚数，则的值为　　　　　　 (　　 )　　

A.　　　　　 B.　　　　　 C.　　　　 D.

1．已知集合M是函数的定义域，集合(为自然对数的底数)，则=　　　　　　　 　　　　 　　　　　　　　　　 　　　(　　 )

A.　 B.　 C.　　　 D.

根据课文内容完成下面语法填空，注意单词拼写和词语用法：

　　 There are all kinds of celebrations 　　1　 (遍及)the world. Different countries have different festivals. Festivals of the Dead are held to honour the 　　2　 　(death) or to satisfy the ancestors. Festivals can also 　　3　 　(hold) to honour famous people. In China, the Dragon Boat Festival honours the famous 　　4　 　(古代的) poet, Ou Yuan. The most energetic and important 　　5　 　(节日 )are Spring Festivals 　　6　 　look forward to the end of winter and the coming of spring. 　　At the Spring Festival in 　7　 , people eat such things 　　8　 　dumplings, fish, and meat and give children lucky money in red paper. Some western countries have very 　　9　 　(excite) carnivals, which take place forty days before Easter, usually in 　　10　 (二月) .

答案： 1. throughout　 2. dead　 3　 be held　 4. ancient　 5. festivals　 6. which　 7. China　

8. as　 9. exciting　 10. February

2. It was obvious that the manager of the coffee shop was waiting for Li Fang to leave. 很明显咖啡店老板在等着李方离开。

[解释] It is/was + adj./n./p.p. + that-clause 结构：

It was obvious/clear that …= obviously/ clearly, … “很明显……，显而易见……”

It is necessary/ important/ strange/ natural + that + sb. should do

It is a pity/a shame/ no wonder + that + sb. should do

It is said/believed/reported/announced/expected/… + that …

[练习] 翻译句子。

1). 真奇怪，这么重要的会议，他居然缺席。

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2). 显然，你错了。

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3). 他竟然向我们撒慌，真是可耻。

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4). 据报道，双方的会谈有进展。

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答案：1). It was strange that he should have been absent from such an important meeting.

　 2). It is obvious that you are wrong. / Obviously, you’ re wrong.

　　 3). It was a shame that he should have lied to us.

　　 4). It is reported that the talks between the two sides are making progress.

课文要点(模块)

1. The country is covered with cherry tree flowers so that it looks as though it might be covered with pink snow.　 整个国度处处都是樱花盛开,看上去就像罩上了一层粉红的雪。

[解释] as though / as if “好像”, 引导表语从句和方式状语从句：

1). 引导方式状语从句

　 She acted as though nothing had happened．她装得好像什么事也没发生过似的。

当从句主语和主句主语一致, 从句谓语中又含有动词be时, 可把主语和be一起省去。

　 He looked about as though (he was) in search of something．他四下张望, 好像寻找什么。

2). 引导表语从句

　 It looks as if it’ s going to rain．看样子天要下雨了。

3). as though和as if从句用虚拟语气, 还是用陈述语气, 完全根据具体情况而定。如果从句表示的意思与事实完全相反, 或者纯粹是一种假设, 通常用虚拟语气。

　 The child talks as if she were an adult. 那孩子说话的样子好象她是个大人。

[练习] 用所给词的适当形式填空。

1). The pencil looks as if it _______ (break) with half of it in the glass of water.

2). Li Ming speaks English very well as though he ______ (be) an Englishman.

3). It seems as if our team ______ (be) going to win.　　

4). He talks about pyramids as though he ______ (see) them himself.

答案： 1). were broken 　　　　 2). were 　　　 　　3). is　　　 　　 4). had seen

8. set off 出发；动身；使爆炸

[典例]

1). What time are you planning to set off tomorrow? 你打算明天几点钟启程?

2). The terrorist set off a bomb in the city centre and killed six people. 恐怖分子在市中心引爆了炸弹，杀害了六个人。

[短语归纳] set短语：

set off for a place 出发到某地　　　　　　　　　　　　　 set about doing sth开始(某工作)；着手做某事

set out 从某地出发上路　　　　　　　　　　　　　　 set out to do sth. 开始做某事

set sth up 摆放或竖起某物；创立，建立　　　　 set sth aside 将某事物放在一边；(为某目的)节省或保留钱或时间

　[练习] 用set词组填空。

1). The new government must ______ ______ finding solutions to the country’ s economic problems.

2). The children ______ ______ the fireworks in the yard.

3). She ______ ______ a bit of money every month.

4). They ______ ______a statue in honor of the national hero.

5). They’ ve ______ ______ on a journey round the world.

答案： 1). set about　 2). set off　 3). sets aside　 4). set up　　 5). set off/out