13.解析：have trouble(in )doing sth.干某事时碰到困难。

答案：B

12.解析：mean to do打算做;mean doing意味着。

答案：C

11.解析：使役动词make用被动语态，其后的宾补用带to的不定式。

答案：C

三班的同学进行了一场有关英语学习的讨论。讨论的题目是：学习英语要不要从儿童时期开始？请你根据下列提示写一篇短文，介绍讨论的情况。

一些同学认为:

1.应从儿童时期开始学习英语；

2.儿童时期记忆力好，可以记住很多单词；

3.能为以后的英语学习打下坚实的基础。

另一些同学认为：

1.不应从儿童时期开始学习英语；

2.儿童时期既要学汉语拼音又要学英语，易混淆；

3.会影响汉语学习和今后的英语学习。

讨论未取得一致意见。

注意：1.文章的起始句已给出；

2.词数：100左右(不包括已给的起始句)；

3.参考词汇：基础-foundation　汉语拼音-Chinese pinyin

The students of Class 3 had a discussion about whether it is necessary to start learning English from childhood.

个性创新拓展

英语谜语

1.What month do soldiers hate?

2.How many feet are there in a yard?

3.Why is an empty purse always the same?

4.What book has the most stirring chapters?

5.What kind of dog doesn’t bite or bark?

6.What is the smallest room in the world?

7.What kind of water should people drink in order to be healthy?

8.How do we know the ocean is friendly?

9.Which can move faster,heat or cold?

10.Why is the library the highest building?

答案：

60.The man was very surprised.The man protests that he is poor.

______ ______,the man protests that he is poor.

59.You should know that what you expect before you get on the Internet.

You should know______ ______expect before you connect with the Internet.

58.Every year or two,a new computer can offer twice the power of the former one.

Every one or two years,a new computer can offer twice as______power______the old one.