短文填空

阅读下面短文，补充所缺信息。并把所填单词填写在答题卡上指定的位置。每个空只能够填写一个形式正确、意义相符的单词.

Connect to the world

Over the past 20 years, the Internet has greatly influenced our world and   小题1: our lives. The Internet makes it much  小题2:for people to search for information. For   小题3:, when we write a history report, we don’t have to go to the library. We can find   小题4: about world leaders and historical events on different websites. Everything we want to know can 小题5:found at the click of a button.

The Internet helps us to stay connected to family, friends and the world around us. Not long ago, we wrote letters and waited weeks for a reply. Today, when we use QQ, we send and receive messages across thousands of miles in a   小题6:seconds.

Although the Internet has made our world better in many ways, in some   小题7: it can be a bad influence. There is a lot of false information on the Internet. It is important not to believe   小题8: we read on the Internet.

Some teenagers spend too much time  小题9: Internet games. They may lose focus on their studies.

There are millions of interesting sites to visit and so many wonderful things to do online. How could we live without the Internet nowadays? But try to let the Internet be your   小题10:servant, not your bad master!

设备小管道气压试验所用的气体为( )。

A．空气

B．二氧化碳

C．压缩空气或惰性气体

D．氧气