问题
单项选择题
单位体积的空气中实际所含的水汽量称为（）。
A.绝对湿度
B.饱和湿度
C.相对湿度
D.露点
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
单位体积的空气中实际所含的水汽量称为（）。
A.绝对湿度
B.饱和湿度
C.相对湿度
D.露点
参考答案：A
阅读理解
Jim is a little boy. He is only five years old. He isn't at school. He can't read or write. But his sister Kate is a student. She is thirteen. She is at school. She can read and write. She can sing and dance,
too. She is a good student. Their parents are teachers.
A. Yes, she is.
B. No, she isn't.
C. Yes, he is.
D. No, he isn't.
2. How old is Jim?
A. Five.
B. Seven.
C. Thirteen.
D. Fourteen.
3. Who is Kate?
A. Jim's friend.
B. Jim's sister.
C. Jim's brother.
D. Jim's mother.
4. Who can sing and dance?
A. Jim.
B. Kate.
C. Jim's father.
D. Jim's mother.
5. What is Jim's father?
A. A doctor.
B. A worker.
C. A teacher.
D. A driver.