5．山东省兖州市2010届高三上学期模块检测一遥控玩具小车在平直路上运动的位移时间图象如图所示，则(　 B　 )

A．15s末汽车的位移为300m　　

B．20s末汽车的速度为一lm／s

C．前10s内汽车的加速度为

D．前25s内汽车做单方向直线运动

4．河南省武陟一中2010届高三第一次月考如图所示，以8 m/s匀速行驶的汽车即将通过路口，绿灯还有2 s将熄灭，此时汽车距离停车线18m。该车加速时最大加速度大小为2 m/s²，减速时最大加速度大小为5 m/s²。此路段允许行驶的最大速度为12.5 m/s，下列说法中正确的有：( AC )

A．如果立即做匀加速运动，在绿灯熄灭前汽车可能通过停车线

B．如果立即做匀加速运动，在绿灯熄灭前通过停车线汽车一定超速

C．如果立即做匀减速运动，在绿灯熄灭前汽车一定不能通过停车线

D．如果距停车线5m处减速，汽车能停在停车线处

3．贵州省兴义市清华实验学校2010届高三9月月考甲、乙两物体都做匀加速直线运动，已知甲物体的加速度大于乙物体的加速度，则在某一段时间内　　　　　　　　　　　　　　　　　　　　　　　　　　 (　 C　 )

A．甲的位移一定比乙的大　　　 　　　　　　　　 B．甲的平均速度一定比乙的大

C．甲的速度变化一定比乙的大　 　　　　　　　　 D．甲受到的合外力一定比乙的大

2．湖北省襄樊四中2010届高三摸底考试某人横渡一河流，船划行速度和水流动速度一定，此人过河最短时间为t₁；若此船用最短的位移过河，则需时间为t₂，若船速大于水速，则船速与水速之比为( A )

A．　　　 B． 　　　C．　　　 D．

1．安徽省两地2010届高三第一次联考检测以速度v₀水平抛出一小球，如果从抛出到某时刻小球的竖直分位移与水平分位移大小相等，以下判断正确的是(　 C　 )

A．此时小球的竖直分速度大小等于水平分速度大小

B．此时小球的速度大小为 v₀

C．小球运动的时间为2 v₀/g

D．此时小球速度的方向与位移的方向相同

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