问题 填空题

投一枚均匀的小正方体,小正方体的每个面上分别标有数字1,2,3,4,5,6.每次实验投两次,两次朝上的数字的和为7的概率是______.

答案

通过列表

 123456
1234567
2345678
3456789
45678910
567891011
6789101112
可知共有6×6=36种可能,两次朝上的数字的和为7的有6种,所以两次朝上的数字的和为7的概率是
1
6

阅读理解

阅读理解。

     Allen goes everywhere with Brigitte Anderson, a 54-year-old secretary. He moves around her office at

work and goes shopping with her. "Most people don't seem to mind Allen," says Brigitte, who thinks he is

wonderful. "He is my fourth child," she says. She may think of him and treat him that way, buying his food,

paying his health bills and his taxes, but in fact Allen is a dog.

     Brigitle and Allen live in Sweden, a country where everyone is expected to lead an orderly life according

to rules laid down by the government, which also provides a high level of care for its people. This level of

care costs money.

     People in Sweden pay taxes on everything, so they aren't surprised to find that owning a dog means more

taxes. Some people are paying as much as 500 Sweden kronor (克朗) in taxes a year for the right to keep

their dogs, money that is spent by the government on dog hospitals and sometimes medical treatment for a

dog that falls ill. However, most such treatment is expensive, so owners often decide to pay health and even

life insurance (保险) for their dogs.

     In Sweden dog owners must pay for any damage their dogs do. A Swedish kennel (宠物园) club official

explains what this means: if your dog runs out on the road and gets hit by a passing car, you, as the owner,

have to pay for any damage done to the car, even if your dog has been killed in the accident.

1. Brigitte pays taxes for Allen because _____. [ ]

A. he is her dog

B. he is her child

C. he follows her everywhere

D. he often falls ill

2. The money paid as dog taxes is used to _____. [ ]

A. keep a high level of care for the people

B. pay for damage done by dogs

C. provide medical care for dogs

D. buy insurance for dog owners

3. From the passage it can be learned that in Sweden _____. [ ]

A. dogs are welcome in public places

B. keeping dogs means asking for trouble

C. many car accidents are caused by dogs

D. people should pay a lot for their dogs

4. If a dog causes a car accident and gets killed, who should pay for the damage done to the car? [ ]

A. The owner of the car.

B. The owner of the dog.

C. The insurance company.

D. The government.

5. What does the underlined word "he" refer to? [ ]

A. Brigitte.

B. Allen.

C. Anderson.

D. Secretary

单项选择题