阅读短文，选择正确答案。

    The bell rings (响). Mr. Wang goes into Class Three and wants to give an English lesson. At this time Mr. Zhang comes and asks him to attend (参加) an important (重要的) meeting. So Mr. Wang says to his students, "Study by yourselves, please."

     When Mr. Wang comes back,he sees Zhao Yang talking with his desk mate Li Cheng.

   “Stand up, Zhao Yang," says Mr. Wang, "What are you doing?"

    "I'm reading English," says ZhaoYang.

    "What's in your hand?" says Mr.Wang.

     ZhaoYang looks at his hand. It's a history book.Then he looks at Li Cheng. There is an English book in his hand. So he says, “Sorry, Mr. Wang. We are studying the history of England."

阅读短文，选择正确答案。

  Hello, I am Peter. Yesterday was Sunday. I walked to my grandpa's home. It was his birthday. I bought (要) many fruit and a big cake in the morning. My grandpa and grandma liked them very much. My mother cooked the lunch. We had a good time.

Last summer holiday I went to Hong Kong        .

为了净化空气，美化环境，我县城兴华小区计划投资1.8万元种玉兰树和松柏树共80棵，已知某苗圃负责种活以上两种树苗的价格分别为：300元/棵，200元/棵，问可种玉兰树和松柏树各多少棵？

根据短文内容，回答下列问题。

    UncleTom and Aunt Mary come from America. They are living in China with their children now. Tom is a teacher. Mary is a housewife.Their daughter Alice is a doctor. She works from Monday to Friday. She works hard. She is good at singing Chinese songs. Jack and Sam, their sons, are twins. They study in the same school but in different classes. Every morning Mary gets up early and cooks for her children. They usually have Chinese foodfor breakfast. Sometimes they have some bread and milk. They often say the Chinese people are friendly to them. They love Chinese people. They love Chinese food. They love China.

参考词汇：do housework，read books，weekend，listen to music，play football

参考词汇：do housework，read books，weekend，listen to music，play football

如图，把长方形纸片ABCD沿EF对折，若∠1=40°，则∠AEF={#blank#}1{#/blank#}