圆形花坛的直径是20m，小自行车车轮的直径是50cm，小明骑车绕花坛一周，车轮大

阅读理解。

     Mr. and Mrs. Smith has their only son, Jack. Jack has a very small head. He only likes science(科学). He doesn’t like other lessons. He likes to break things and mend them again. And he likes making things.

Today he wants to make a robot. He wants it to have classes and do homework for him.

     His parents think something is wrong with his head. They want to see a doctor. They want the doctor

to mend his head or make a new one for him.

1. Jack is a ______ .

A. student

B. teacher

C. doctor

D. robot

2. There are people in Jack’s family______ .

A. two

B. three

C. four

D. five

3. Jack doesn’t like to ______ .

A. study science

B. study math(数学)

C. break things

D. make things

4. Jack wants to today______ .

A. see a doctor

B. mend his bike

C. do his homework

D. make a robot

5. Do they have to(不得不) see a doctor?

A. I think so.

B. I don’t know.

C. I don’t think so.

D. Yes, they do.

急性尿潴留的病因不包括（）

A.前列腺增生症

B.膀胱结石

C.会阴部手术后

D.大量饮水并应用利尿剂

E.前列腺增生症患者服用平喘药后

农村个人生产经营贷款采取自助可循环方式的单户余额最高不超过50万元（含）。

主要表现形式有风化、侵蚀、搬运、沉积和固结成岩等。据此及下列材料完成回答下列问题。材料：与外力作用相关的部分地理事物或现象：①冲积平原和三角洲②黄土高原千沟万壑的地表形态③横断山地“水拍云崖”的雄奇壮丽景观④沙丘；上述地理事物或现象中，位于干旱地区的是（）

A、①

B、②

C、③

D、④