题目内容
( ) 3. It a long time since we reached Beijing.
A. is B. was
C. has been D. had been
3. C It has been + ‘一段时间+ since +从句为固定句型。
名校课堂系列答案阅读短文，从方框中选择适当的词并用其正确形二式填空，使短文通顺、意思完整。
for, care, read, always, at, allow, word, develop, protect, they, interesting, never |
Internet is educational. Many people think children should be 1 to surf the Internet as they wish. In this way，they can look through different subjects on different kinds of websites according to their own 2 But in my opinion,children should 3 be watched while surfing the Internet.
Many websites have information that children should not 4 . There are many things that children don’t understand. All of these may have some bad influence
on children’s 5 Also,it is dangerous to let children use chat rooms by 6 Many parents tell their t children not to talk to strangers on the street,so they should be 7 of whom their children talk to on the Internet,too. What’s more,sitting in front of a computer for a long time isn’t good 8 children’s eyes,so parents should monitor (监视)the time that childen f spend on the Internet. It’s parents’ duty to 9 their f children from bad information.
In a 10 ，children should be kept away from anything that could be bad for them. I strongly believe;that it is necessary for parents to watch their children | when they use Internet.
1. 2. 3. 4. 5.
6. 7. 8. 9. 10._ _