高中英语人教版 (2019)必修 第二册Unit 2 Wildlife protection课时练习

3.2课时作业

Ⅰ.根据首字母或汉语注释，写出单词的正确形式

1．In basketball matches, American players have an obvious ________ (优势) in height.

2．Be careful! A red light is usually a ________ (信号) of danger.

3．New problems ________ (出现) every day.

4．Which ________ (类型) of tea do you prefer?

5．My father bought an ________ (电子的) dictionary for me.

6．His mother is a football ________ (教练)．

7．Bravery is part of the Chinese ________ (性格)．

8．I can't start my computer, for it may have computer ________ (病毒)．

9．Their ________ (侄女) is very naughty.

10．Don't judge a person by his ________ (外貌)．

答案：1.advantage　2.signal　3.arise　4.type　

5．electronic　6.coach　7.character　8.viruses　9.niece

10．appearance

Ⅱ.选词填空

 1．Don't blame him, ________， he is a child.

2．He soon ________ the lessons he missed.

3．The earth goes round the sun ________.

4．The young woman ________ marry a rich husband.

5．________ his teacher, he had made greater progress in his English.

6．The new teacher is fresh from university, he really doesn't know how to ________ his badly­behaved students.

7．________， his biology has improved, but there is still a long way to go.

8．They told me it would be cheap, but ________ it cost me nearly $500.

9．Will you please ________ my child while I am out?

10．He has a house ________， and the house was built ________ last year.

答案：1.after all　2.made up　3.once a year　4.is determined to　5.With the help of　6.deal with　7.In a way　8.in fact　9.watch over　10.of his own; on his own

Ⅲ.完成句子

1．她电脑用得很好，现在很少用纸和笔写字了。

She uses the computer ________ ________ ________ she seldom ________ ________ a pen and paper.

2．但是我总是孤独地立在那里，直到20世纪60年代早期，他们把我与因特网连在了一起。

But I was always ________ ________ ________ ________ by myself, until ________ ________ ________ ________， they gave me a family connected by a network.

3．从某种程度上说，她的英语有进步，但对她来说，道路还很长。

________ ________ ________， her English has improved but ________ ________ ________ ________ ________ ________ ________ ________.

4．我能够通过万维网和其他人分享我的知识。

I was able to ________ ________ ________ ________ others ________ the World Wide Web.

5．他把观看比赛时所看到的一切都编入我们的程序。

She ________ ________ ________ all the possible moves she has seen ________ ________ human games.

6．他太累了以至于一躺下就睡着了。(so ... that ...的倒装句)

________________________________________________________________________

7．各种可能的方法都试过了，但没有一种是成功的。

Every possible means ________ ________ ________， but none proves successful.

8．随着时间的推移，她对英语越来越感兴趣。

________________________________________________________________________

9．这个人很难对付。(deal with)

________________________________________________________________________

10．我还没注意到我把钱包掉在出租车里，车就离开了。

________________________________________________________________________

答案：

1．so well that; writes with

2．so lonely standing there; in the early 1960s

3．In a way; there is still a long way to go

4．share my knowledge with; through

5．programs us with; while watching

6．So tired was he that he fell asleep as soon as he lay down.

7．has been tried

8．As time goes by; she becomes more and more interested in English.

9．The man is hard to deal with.

10．Before I noticed I had left my purse in the taxi, the taxi had left.

Ⅳ.完形填空

Computer hackers (黑客)have now got their hands on mobile phones.

A phone virus (病毒) can __1__ your phone do things you have no control over, computer security experts __2__. It might __3__ the White House or the police, or forward your personal address book to a marketing company.

Or it could simply eat into the phone's operating software, turning it __4__ and erasing your personal information. Similar viruses have already made mobile phone owners __5__ in Japan and Europe.

Ari Hypponen, chief technical officer of a computer security in Finland, said a virus “can get your __6__ and send them elsewhere. And it can record your __7__”．

Mobiles are now able to surf the Net, send emails and __8__ software, so they are an easy __9__ for the same hackers who have sent viruses to computers over the last decade.

“It's technically __10__ now，” said Stephen Trilling, director of research at anti－virus __11__ maker Symantec Corp based in the US. “If the phone is connected to the __12__， it can be used to transmit(传递) threats and __13__ targets, just as any computer can.”

In Japan, if you opened a certain email message __14__ your mobile, it would cause the phone to repeatedly __15__ the national emergency number. So phone operators had to __16__ emergency calls until the bug was __17__ .

In Europe, mobile's short message service, __18__ SMS, has been used to send codes that could damage phones.

Mobile users can __19__ viruses, of course, by sticking to their traditional phones __20__ Web links, some experts said.

1．A.get       B．force   

C．make      D．damage

2．A.speak    B．talk    

C．tell        D．say

3．A.lead      B．cause   

C．control    D．call

4．A.off      B．out     

C．down      D．on

C．excited                D．terrified

C．news                  D．information

7．A.voice     B．passwords

C．music      D．address

8．A.make     B．destroy 

C．download  D．develop

9．A.job       B．task    

C．signal      D．target

C．useful                 D．valuable

C．computer              D．material

12．A.computer   B．television

C．Internet   D．radio

13．A.strike      B．visit    

C．inquire    D．attack

14．A.in        B．by     

C．on        D．with

15．A.send        B．dial    

C．count      D．press

16．A.cancel      B．keep   

C．stop       D．prevent

17．A.removed    B．cleaned 

C．called     D．clear

18．A.and        B．nor     

C．or         D．but

19．A.stop       B．avoid   

C．kill       D．find

20．A.in          B．with    

C．over       D．without

答案与解析：

本文为一篇科技说明文。“电脑病毒”这个词大家都很熟悉。当手机也感染了电脑病毒后会发生什么事情呢？我们应该怎样防止这样的事情发生呢？

1．解析：由空格后的do things you have no control over可知，手机病毒会迫使人们做他们无法控制的事情。但get和force要用带to的不定式作宾补，而damage的含义与上下文不吻合，故此处用make sb. do sth.结构。

答案：C

2．解析：用及物动词say表示电脑专家这样“说”，前面的直接引语是它的宾语。

答案：D

3．解析：由后文的it would cause ...emergency number可以看出，手机感染病毒后乱打电话。call表示“拨打电话”。

答案：D

4．解析：由前文的eat into, operating software等词表明病毒是在手机处于工作状态时攻入，继而关闭你的手机，消除其中的内容。

答案：A

5．解析：使用手机时遇到上述情况会引起诸多不便，这自然让人觉得生气(angry)。

答案：B

6．解析：此处message和information均符合语境，但根据空格后的them可知此处指代的是可数名词，故确定为messages。

答案：A

7．解析：由前文“病毒会到处散发你手机上的信息”可推知此处指“还会记下你的密码(password)”。

答案：B

8．解析：该段讲述的是手机的功能，如能上网、发邮件等，自然此处指“还能下载(download)软件”。

答案：C

9．解析：正是由于手机有上述功能，才能成为黑客的攻击目标。target“目标”。

答案：D

10．解析：it指上文所讲的事，手机受电脑病毒攻击这件事从技术角度讲是可能的(possible)。

答案：B

11．解析：既然是anti－virus(抗病毒)，当然是“杀毒软件”。hardware“硬件”；software“软件”。

答案：B

12．解析：如果手机上了网，就会和电脑一样传播病毒或威胁。

答案：C

13．解析：如果手机上了网，就会成为攻击目标。这里和上文第9空形成呼应。

答案：D

14．解析：表示“在手机上的信息”用介词on。

答案：C

15．解析：此处和前文第3空所在句子一样，指手机受到病毒袭击后就会不断地打向白宫、警察等。dial＝call，意为“拨电话”。

答案：B

16．解析：在这种情况下急救中心的接线员就只好关闭系统以免受到干扰。

答案：C

17．解析：急救电话被停止，直到这令人讨厌的病毒被清除掉(remove)。

答案：A

18．解析：SMS是short message service的缩写，故本题用or表示“或者说，换句话说”。

答案：C

19．解析：由后文的by sticking to their traditional phones可知，手机用户也可以通过使用传统的移动电话躲开(avoid)病毒。

答案：B

20．解析：可以上网的手机有被病毒入侵的危险，人们可以使用不带网络连接的传统电话，不与网络连接。

答案：D

Ⅴ.七选五阅读

Online Friends and Love

In so many ways, cyberspace mirrors the real world. __1__ Others buy and sell products. Still others look for friendship, or even love. Unlike the real world, however, your knowledge about a person is limited to words on a computer screen. Identity (身份) and appearance mean very little in cyberspace. __2__ So even the shyest person can become a chat­room star. Usually, this “faceless” communication doesn't create problems. Identity doesn't really matter when you're in a chat room discussing politics or hobbies and it makes the Internet a great place for exciting conversation. Where else can so many people come together to chat about their interests? __3__ They're looking for serious love relationships. Is cyberspace a good place to find love? That answer depends on whom you ask. Some of these relationships actually succeed. Others fail miserably.

Supporters of online relationships claim that the Internet allows couples to get to know each other. Personal appearance doesn't get in the way. But critics of online relationships argue that no one can truly know another person in cyberspace. Why? __4__ Internet users can carefully make their words fit whatever image they want to give. In a sense, they're not really themselves. All of this may be fine if the relationship stays in cyberspace. __5__  With so many unknowns, it's easy to let one's imagination “fill in the blanks”. This leads to disappointment when couples meet in person. So, before looking for love in cyberspace, remember the advice of Internet pioneer Clifford Stoll：“Life in the real world is far richer than anything you'll find on a computer screen.”

A. When we talk with others on line, we can express ourselves freely.

B. But some Internet users want more than just someone to chat with.

C. People ask for information, play games, and share hobby tips.

D. Generally speaking, online friends and love are worth seeking for.

E. Because the Internet gives users a lot of control over how others view them.

F. Rather, a person's thoughts — or at least the thoughts they type — are what really count.

G. But not knowing a person is a big problem in a love relationship.

答案：1－5　CFBEG