碘酸钾是一种可加在食盐里预防碘缺乏症的物质，在这种物质中碘元素显+5价，则它的化
题型：选择题
问题：
碘酸钾是一种可加在食盐里预防碘缺乏症的物质，在这种物质中碘元素显+5价，则它的化学式为（ ）
A．KIO4
B．KIO3
C．KIO2
D．KI
题型：选择题
阅读理解
In a small village (村庄), there is a teacher, a nurse (护士), a driver (司机) and a worker. They are
good friends. What are their names? One is Mike, one is Jack, one is Tom and the other is John. Mike's,
Jack's and Tom's children are classmates. John doesn't have any children. He teaches his friends' children
at school. Mike has many hens. He gives the driver and the nurse eggs. Jack's child goes to the nurse's
house. The nurse's house is beside Jack's.
1. Are
the four people good friends?
A. Yes.
B. No.
C. Not.
D. They are brothers.
2. Are they all men?
A. Yes.
B. No.
C. Two are men. Two are women.
D. They are women.
3. What's John?
A. A nurse.
B. A driver.
C. A teacher.
D. A worker.
4. Who has hens?
A. Jack.
B. Tom.
C. Mike.
D. John.
5. Where is the nurse's house?
A. Behind Mike's.
B. Beside Jack's.
C. Beside Mike's.
D. Under Jack's.
