问题 填空题

家庭电路中的电灯的连接方式是______联,家庭电路电压______V.

答案

(1)家庭电路的用电器都是连接在火线和零线之间,火线和零线之间的电压是220V,所以家庭电路的电压是220V.

(2)电灯和电灯之间都是并联的,因为两灯之间不能相互影响工作,它们的额定电压都是220V,只有并联才能使家用电器正常工作.

故答案为:并;220.

阅读理解

Nowadays, more and more people like to shop on the Internet.  How can you protect yourself from different types of Internet tricks?  Following these tips can make you online shopping safer:

(1) Never click on an unsolicited(主动提供的) e-mail.  If you are interested in the things well-known company that sells the same thing, don’t click on any links in the e-mail itself.

(2) Don’t answer any e-mail that asks you for personal financial(财政的) information.  Most of the legitimate(合法的)companies will not ask your information through e-mail.  And don’t believe what the e-mail says easily.  Sometimes some e-mail will ask you to make a telephone call to get more information about the things you want.  Don’t forget to check the phone number on your phonebook to make sure it is the number of a legitimate company before you make the call.

(3) When you are searching for information on the Internet, make sure that there is a key symbol at the bottom of your browser(浏览器)and the “http” in the website address.  These mean that the website is safe.

(4) Don’t sent your money to an unknown website before you receive the things they send to you and make sure they work well.

Shopping on the Internet is convenient and fun.  It is also safe if you are careful enough.

小题1: If you want to protect yourself from Internet tricks, what can you do?

A. Click on the links in the e-mail itself.

B. Make sure the website is safe.

C. Make a phone call according to the information in the e-mail.

小题2:When searching for information, make sure there is _________at the bottom of your browser and ________in the website address.

A. a key picture, the “http   

B. a key symbol, the phone number 

C. a key symbol, the “http”

小题3:The best title for the passage may be_____________.

A. Tips on Sending E-mail  

B. Tips on Making a telephone  

C. Call Tips on online Shopping

小题4: From Tips 2 we can learn that_________________.

①we should refuse to answer an e-mail about personal financial information

②we should click on an unsolicited e-mail

③we should remember to check the phone number before we call the company

④most of legitimate companies will ask for your information through e-mail

A. ②③          B. ①③         C. ②④

小题5: Which of the following is NOT TRUE?

A You can click on any link of e-mails.

B. Don’t believe what the e-mail says easily.

C. Not all the websites are safe.

判断题