如图13-4-5所示，一束白光从左侧射入肥皂薄膜，下列说法正确的是（） 图13

阅读下列短文，从各题A 、B 、C 、D 中选出能回答所提问题或完成所给句子的最佳答案。

     John gets up early from Monday to Saturday, because he must go to school before 7:30 on weekdays

  and go to the Drawing Club at 8:00 on Saturday mornings. He usually goes to the bookshop on Saturday

  afternoons, and after supper he watches TV until (直到) midnight.

     He doesn't get up early on Sundays. He often gets up at 10 a.m. And he always watches TV after he

  gets up. John's parents both work on Sundays, so he usually goes to KFC to have a hamburger and

 some juice for lunch. After that, he goes back home and starts to play computer games until his parents

 come back. He does his homework after supper. He usually has lots of weekend homework, so he must

 spend three hours on it. He usually goes to bed at about 11:00 on Sunday evenings. He often complains 

 (抱怨) he has too much homework to do.

1. How often does John need to get up early?

    A. Every day.                  

    B. Five days a week.

    C. Only at the weekend.          

    D. Every day except on Sundays.

2. What does John do on Sunday mornings?

    A. He goes to have lessons.        

    B. He goes to a club.

    C. He goes to the bookshop.    

    D. He watches TV.

3. When does John do his weekend homework?

    A. On Sunday evenings.          

    B. On Sunday mornings.

    C. On Saturday evenings.        

    D. On Sunday afternoons.

4. Why does John have lunch in KFC on Sundays?

    A. Because he's too busy.        

    B. Because his parents aren't at home.

    C. Because he gets up too late.    

    D. Because his parents have lunch in KFC.

5. Which of these is not right?

    A. John watches TV after supper on Saturdays.

    B. John doesn't exercise on Sundays.

    C. John watches much TV on Sunday afternoons.

    D. John goes to bed late on Saturday and Sunday evenings.

凝血机制障碍可致外科手术过程出血，主要因素有（）

A.凝血因子异常

B.麻醉药物对凝血机制有一定影响

C.休克

D.手术期间输入大量库存血

E.某些脏器手术影响毛细血管功能

凡是能给煤矿生产或从业人员生命安全、财产造成严重危害的事故统称为（）

A、灾害事故

B、一般事故

C、煤矿重大灾害事故

1832年英国第一次议会改革是为了适应下列哪个阶层的需要（）

A.大资产阶级

B.工商业资产阶级

C.小资产阶级

D.资产阶级民主派

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