根据短文内容，选择正确答案。
Thursday, June thirteenth
Dear Kate,
How are you? I'm a student. I want to be your friend. Would you like to be my friend? I am in Class 1, Grade 4. There are sixty students in my class. We are goodfriends. I live in Baoding. It's not a big city, but it's beautiful. It's very warm in springand cool in autumn here, but it's very hot in summer and cold
in winter. Spring is my favourite season, because I love to fly kites.
Zhang Hong
1. Who writes the letter?
A. Zhang Hong.
B. Kate.
C. I don't know.
2. The letter is written (被写) on _____.
A. June thirteenth
B. Tuesday
C. July thirteenth
3. Zhang Hong is in _____.
A. the U. S.
B. the U. K.
C. China
4. Zhang Hong is a _____.
A. teacher
B. worker
C. student
5. There are _____ students in Zhang Hong's class.
A. 50
B. 60
C. 70
6. What is Zhong Hong's favourite season?
A. Spring.
B. Winter.
C. Summer.
7. How's the weather in summer in Baoding?
A. Warm.
B. Hot.
C. Cool.
8. What does Zhang Hong like to do ?
A. Reading books.
B. Flying kites.
C. Watching TV.
求E(X)和D(X)。