Unit 4 Making the news课时作业

Language points

第一节(共20小题;每小题1. 5分, 满分30分)

　　阅读下面短文, 从短文后各题所给的A、B、C和D四个选项中, 选出可以填入空白处的最佳选项。

　　Digital cash acts much like real cash, except that it's not in paper. Money in your bank account is 　1　 on a microchip(芯片), a bank card, or on a hard drive of your computer. Your 　2　 bank account code can be used over the Internet to buy a new CD, or can be presented in 　3　 form at the local supermarket for goods. Everybody in the trade all agrees to 　4　 its worth, and thus this new form of exchange is created.

　　Digital cash brings with it clear 　5　 over traditional money. For the user, electronic money is precise, simple and convenient. It could mean 　6　 thousands of paper money troubles, thus, 　7　, reducing user fees.

　　The use of digital cash, 　8　 convenient, may bring with it some problems. Because digital money is anonymous(匿名的), 　9　 could use untraceable digital money to avoid taxes. Computer hackers could 　10　 digital cash systems and 　11　 download the wealth of thousands of customers.

　　The potential problems go 　12　 those. If your hard drive crashes, you may lose not only a hard drive and valuable 　13　, but all of your digital cash. Digital cash can sometimes do 　14　 to traditional banks and government-controlled monetary systems. Large private companies can take power away from traditional banks by 　15　 large holdings of digital cash. Digital cash may not be 　16　 to those who cannot afford personal computers and it is rather 　17　.

　　　18　 the potential problems, most experts believe that the use of the Internet for electronic trades and the use of digital eash will 　19　 increase over the next ten to twenty years, but it won't 　20　 the real cash you can grab in your hand any time.

1. A. spent B. designed

C. stored D. based

答案C

解析根据常识, 银行账户中的数字化钱币是储存在芯片、银行卡或电脑硬盘里的。

2. A. special B. electric

C. secret D. favorite

答案A

解析special在这里表示"专用的, 特有的"。每个人都有自己特有的银行账号。

3. A. check B. card

C. cash D. paper

答案B

解析到超市买东西使用银行卡的方式付钱。