1、Unit 2 Reading and Thinking一、填空1.There is little chance that we will succeed in changing the law. _(然而), it is important that we try.2.Tickets are _(可获得的) free of charge from the school.3.Id like to give you some _(相关的) suggestions.4.Im tired of your _(不断的) complaint.5.Doctors issued a _(警告) against
2、 eating any fish caught in the river.6.As a sailor, you must obey the captains _(命令).7.I cant give you an _(立刻的) reply before I discuss with my partners.8.Make exercise a part of your daily _(常规).9.Maybe there will be _(自动的) kitchens to cook meals for us in the future.10.The old couple live in a _(偏
3、远的) village.11.Parents words and deeds can _(potential) affect children.12.As we all know, fashion is _ (constant) changing.13.The president _(command) the release of the prisoners last year.14.In my opinion, its a matter of personal _ (prefer).15.The heating will switch off _(automatic) when you le
4、ave the room.二.阅读理解 Dogs are our best friends. Thats especially true after a disaster, such as an earthquake. When buildings fall down, search-and-rescue dogs help find trapped people. Dogs amazing noses can pick up the smell of survivors. Now scientists have developed an electronic tool that does t
5、he same thing. Its taking smell detection (探测) to a whole new level. The new invention is a sort of electronic nose, which can detect extremely low levels of many compounds (化合物) from peoples skin. This isnt the first time engineers have developed such an object. Earlier models, however, have been b
6、ulky and expensive. They could not detect low levels of target compounds either. The new one is inexpensive and small enough to fit inside hand-held equipment. The electronic nose can detect extremely slight smell of more than one compound at the same time. Being able to do this, in such a small obj
7、ect, is the significant discovery, says Sotiris E. Pratsinis, Professor of Process Engineering & Materials Science at the Swiss Federal Institute of Technology in Zurich. His team tested it in special spaces. They were like the small spaces where people might be trapped. Chemicals given off by the v
8、olunteers built up inside. The electronic equipment detected those compounds at unbelievably low levels. The results were good news for the research team. But they may be not for our four-legged friends, who could soon be out of a job. Ideally, this technology could replace search-and-rescue dogs, P
9、ratsinis says. Stephen Taylor, an electrical engineer, agrees that the new technology has some benefits over dogs. Still, he thinks it may be too soon to have our trusty friends retire. He suspects, I foresee that such an object could add to the fine work done by the dogs. Taylor also pointed out so
10、me potential limitations of the new invention. E-noses are useful, but can be very likely to be affected by unstable readings and interruption, he says.1.Why does the author talk about dogs at the beginning?A.To catch the readers attention.B.To introduce the topic about e-noses.C.To show what search
11、-and-rescue dogs do.D.To add background information for discussion.2.Which of the following best explains bulky underlined in Paragraph 2?A.Complex.B.Fragile.C.Handy.D.Large.3.What is Paragraph 3 mainly about?A.What e-noses, working principle is.B.How e-noses are made.C.What differences between dogs
12、 and e-noses are.D.How powerful e-noses are.4.What does Stephen Taylor mean?A.Dogs and e-noses could work together.B.Search-and-rescue dogs will retire soon.C.E-noses are more reliable than noses of dogs.D.Dogs are better at finding out trapped people.三.语法填空 Global warming could make humans shorter
13、Scientistsclaim to have found evidence that it caused the worlds first horses _ (become)smaller nearly 50 million years ago. In fact, a team from the universities of Florida and Nebraska says_ has found a link between the earth heating up and the size of horses,during the last time the world heated
14、up. The scientists used fossils to follow the evolution of horsesfrom their earliest _(appear) 56 million years ago. As temperatures went up, their size went_. The scientists say that the current warming could have the same effect_ mammals and could even make humans _ (small). Horses started out sma
15、ll,about the size of a small dog. Whats _ (surprise) is that after they first appeared, they then became even smaller and then dramatically increased in size, and that _( exact) corresponds to (符合) the global warming event, followed by cooling. It had been known that mammals _( be) small during the
16、last warm time, _ we hadnt realised that temperature specifically was driving the evolution of body size,Dr Bloch said in the Science journal.答案以及解析一、1.答案：Nevertheless解析： 2.答案：available解析： 3.答案：relevant解析： 4.答案：constant解析：5.答案：warning解析：6.答案：commands解析： 7.答案：instant解析： 8.答案：routine解析：9.答案：automatic解
17、析： 10.答案：remote解析： 11.答案：potentially解析：考查词性转换。句意:父母的言行能潜在地影响孩子。此处修饰后面的动词affect,应用副词,故填potentially。12.答案：constantly解析：考查词性转换。句意:众所周知,时尚在不断地变化。设空处修饰主句的谓语动词,故设空处应用副词,故填constantly。.13.答案：commanded解析：考查时态。句意:去年总统下令释放这些囚犯。分析句子成分可知,设空处应为谓语动词,根据时间状语last year可知应用一般过去时,故填commanded。14.答案：preference解析：考查词性转换。句意
18、:在我看来,这是个人喜好的问题。设空处前是形容词personal,所以设空处应用名词,故填preference。15.答案：automatically解析：考查词性转换。句意:你离开这个房间的时候,暖气就会自动关上。此处作状语,故填副词automatically。二.答案：1-4BDDA解析：1.推理判断题。第一段中,作者先介绍了狗的鼻子有很多用途,然后介绍科学家现在发明了可以做同样事情的电子鼻。由此可以推断,先提及狗是为了引出电子鼻的话题,故选B项。2.词义猜测题。根据第二段中的Earlier models, however, have been bulky and expensive. T
19、he new one is inexpensive and small enough to fit inside hand-held equipment.可知,早期的电子鼻比较昂贵且“bulky”,新型的电子鼻则体积小巧,可放入手持设备内,新旧形成对比,由此猜测bulky是“庞大”的意思,故选D项。complex意为“复杂的”,fragile意为“易碎的”,handy意为“方便的”。3.主旨大意题。第三段主要介绍了电子鼻可以同时检测到多种化合物极其轻微的气味,故选D项。4.推理判断题。根据最后一段中的“I foresee that such an object could add to the
20、 fine work done by the dogs.”可知,斯蒂芬泰勒认为电子鼻可以配合狗进行工作,故选A项。 三.答案：to become it appearance down on smaller surprising exactly were but解析：cause sb/sth to do sth 是固定搭配,意为 导致某人/某物做某事. 故填 to become.指代前面提到的 a team 应用 it. 故填 it.形容词性物主代词 their 后应用 appear 的名词形式.故填 appearance.根据上下文内容可知,温度上升会导致马的体形变小.故填 up 的反义词 d
21、own.have an effect on 是固定搭配,意为 对.有影响. 故填 on.此处暗含气候变暖前后人类体形的对比,应用比较级.故填 smaller.be 动词后应用形容词作表语,此处修饰的是事物,应用 surprising, 意为 令人惊讶的. 故填surprising.修饰动词短语 corresponds to 要用 exact 的副词形式.故填 exactly.mammals是复数形式,后面的系动词也要用复数形式.时间是 during the last warm time, 应用一般过去时.故填 were.句意为:我们已经知道哺乳动物在上个温暖期个头较小,但我们还未意识到正是温度驱动着体形大小的进化.由句意可知设空前后为转折关系.故填 but.