Keys: 1). lays 2). lays great stress on 3). lays/puts; aside
3. harmful adj. 有害的；伤害的 harm n.&vt. 伤害（某人） [练习] 根据句子的意思在括号里填入适当的词或翻译。
Keys: 1). harmful 2). harm 3). Reading in the sun does a lot of harm to your eyes. = Reading
in the sun does your eyes a lot of harm.= Reading in the sun is very harmful to your eyes.
4. exist vi. 存在；生存 existence n. 存在 [练习] 用exist的短语或其适当形式填空。 Keys: 1). exists; in 2). exist on to 3). existence
5. puzzle vt.&vi. (使)迷惑；(使)苦思 n.谜；难题 puzzled adj.无法了解的；困惑的 puzzling adj.令人费解的
[练习] 用puzzle的适当形式填空或翻译。
Keys: 1). puzzling 2). am puzzled 3). puzzled 4). puzzle
5) was puzzled 6). What puzzles me
6. pull v.拉，拖，拔；移动 n.拉，拖；拉(引)力 [练习] 用pull短语的适当形式填空。
Keys: 1). pulling out 2). pulled out 3). pull together
7. cheer vt. & vi. (使)高兴、振奋；(对)欢呼 cheerful adj.高兴的 cheerless adj.不高兴的 [练习] 用cheer的短语或其适当形式填空。
Keys: 1). cheered 2). cheered; on 3). cheering
Ⅳ.重点词组
1. to begin with = to start with 以……开始；由……作为开头；首先 [练习] 根据句子的意思完成句子。
Keys: 1). began/started; with 2). began/started with 3). To start/begin with
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2. in time 及时；最终；迟早 [练习] 用time短语填空。
Keys: 1). in time 2). in time 3). in no time 4). At no time
5). at the same time 6). At one time 7). at a time 8). for the time being
3. in one’ s turn 轮到某人；接着 [练习] 用turn短语填空或翻译句子。
Keys: 1). by turns 2). We drove the car by turns / in turn. = We took turns to drive the car.
3). Whose turn is it to give a speech today?
4. prevent...from = stop...from = keep....from 使……不做事；阻止……做某事 [练习] 根据句子的意思完成句子或翻译。
Keys: 1). prevent/stop/keep the disease from spreading 2). prevent / stop
3). The police prevented/stopped/kept them from carrying weapons. = They were prevented/stopped/kept from carrying weapons.
5. block out 挡住（光线） [练习] 用out短语填空。
Keys: 1). gave out 2). pick; out 3). come out 4). turned out 5). checked out
6. be off = set off 出发；动身；不用上班/学/开张 [练习] 用turn短语填空或翻译。
Keys: 1). are off 2). was off 3). Keep off 4). paid off
7. break out (灾难、战争等) 突发；爆发 [练习] 用break短语填空。
Keys: 1). broke out 2). break up 3). broken down 4). broken into
8. watch out 密切注视；当心；提防 [练习] 用watch短语填空。
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Keys: 1). watching over 2). watch out for 3). watch out
Ⅴ.重点句子
1. It exploded loudly with fire and rock, which were in time to produce the water vapour, carbon dioxide, oxygen, nitrogen and other gases, which were to make the earth’ s atmosphere. 它(地球)巨大的爆炸喷出了烈火与岩石。最终产生了水蒸气、二氧化碳、氧、氮和其他多种气体，从而形成了地球的大气层。 [练习] 完成句子或翻译。
Keys: 1). are to go 2). to come 3). are to hold; to be held 4). The train is to arrive in Beijing at 10: 25 am.
2. That made it possible for life to begin to develop. 那使生命的生长发育成为一种可能。 [练习] 完成句子或翻译。
Keys: 1). make it a rule 2). find it hard
3). He found it impossible to leave Germany for the USA. 4). I think/find/feel/consider it my duty to help you.
3. But when I tried to step forward I found I was carried twice as far as on the earth and fell over.而当我试着向前迈步的时候，我发觉我被送出去很远，步子的跨度竟是地球上的两倍，因而我摔倒了。
[练习] 完成句子或翻译。
Keys: 1). This ruler is three times as long as that one. = This ruler is three times longer than that one.
= This ruler is three times the length of that one. 2). four times as many students as 课文要点 Ⅰ.课文词汇填空
答案：1. moving 2. atmosphere 3. following 4. later 5. extremely 6. on 7. multiplying 8. oxygen 9. which 10. good
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Ⅲ.课文佳句背诵与仿写
1【原句】What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.
答案：What gift he would give me was uncertain until yesterday afternoon when he came to see us.
【模仿2】没人知道我们将要得到什么样的工作，直到3年后我们从大学毕业以后才知道。 答案：What jobs we will get is unknown until 3 years later when we will graduate from university.
2【原句】What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.
答案：What he wanted to tell us is that one afternoon when he was on his way home he saw a bird which was dying.
【模仿2】他缺席的原因是他在上学时被一辆小车撞伤了。
答案：Why he was absent is that he was badly hurt by a car when he went to school.
3【原句】They multiplied and filled the oceans and seas with oxygen, which encouraged the later development of early shellfish and all sorts of fish.
答案：We often see some people throw rubbish and spit everywhere，which makes our environment dirty.
【模仿2】她的父母非常感激我们，医生也高度评价了我们的急救，这使得我们意识到学习急救的必要性。
答案：Her parents were very thankful to us and the doctors thought highly of our first aid, which made us realize the necessity of learning first aid. 单元自测 1完形填空 答案： 1. D
文章用海明威的例子来说明一个问题：当生活给你一个打击，你就借势向前。
通读全文可知“不应该把所有的坏运气都看作坏事”(它也许是推动你前进的一次机会或者动力)。根据此意需要选 D项
2. D
根据文章最后一段可以得到提示：“When life gives you a kick, let it kick you
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forwards!” 当生活给你一个打击，你就借势向前。
3. A 海明威通过这个“厄运”学到了一些东西。学到了 / 学会了要用learn表达。 4. B
从第四段最后一句“Hemingway did rewrite the stories and eventually became a world-famous writer.”可知在他丢书稿的时候他尚未成名，所以是在努力(struggling)当中。
5. C 即将出版的书稿丢了，这对尚未成名的海明威来说不啻是一次灾难(disaster)。 6. C 7. A
这几个月的辛勤劳动的成果就这样付诸东流了(simply wasted)。
他向朋友哭诉时，朋友却认为这是运气（fortune）。从下文他劝告海明威重新来写作并且取得成功可以看出来。
8. A
忘记那些不太有印象的东西，这些也是小说里不怎么重要或不精彩的(weak)部分。weak与the best相对。
9. B
朋友鼓励他要乐观(optimism)，要有自信心(confidence)，而confidence与optimism并列，表达相近的意思。
10. C
从前一句的 “Don’t pray for fewer problems; pray for more ability.”可知不是要祈祷问题会减少，而应该去起到自己获得更大的能力。那么，下一句：不是祈祷少一些挑战，而应该祈祷自己具备更高的智慧 (greater wisdom)来应对这些挑战。不是寻找一个简单的解决途径，而是要可能的最佳的方法。
2.语法填空 答案：
1．had come 考查动词的过去完成时态，表枪声在我想／认为之前发生： 2．Coming 考查动词短语see somebody doing sth．的结构： 3．with 介词，\有，具有\：
4．importantly more importantly表“更重要的是”： 5．Before 时间状语从句，表“在……之前”：
6．and and连接ran up...和disappeared两个动作，表并列关系： 7．What What happened?是固定句型，表惊讶： 8. 1ess less than 5 minutes表“不到五分钟”。
9．was buying 过去进行时态，表当时正在买巧克力时，警察逮捕了他： 10．a 表一份奖品：
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