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问题 选择题
小明同学利用圆珠笔杆、钢丝、细绳制成了如图所示的滑轮组用其匀速提升重物，不考虑摩擦、笔杆和绳重，下列说法正确的是（　　）

A．拉细绳的力F等于钩码重力G的

B．拉细绳的力F等于钩码重力G的

C．拉细绳的力F等于钩码重力G的

D．拉细绳下降的距离是钩码上升高度的

答案

答案：C

阅读理解
阅读理解
Important Ages in the UK
AgeWhat you can do
5You have to go to school.
12You can buy a pet.
13

You can get a part-time job, but you can't work
for more than two hours on a school day or on
Sunday.
14You can go into a bar, but you can't buy alcohol (酒).
16

You can leave school. A boy can join the army with
the parents' permission. You can drive a motorcycle.
You can have beer or wine with a meal in a restaurant.
17You can hold a license to drive most small cars.
18

Age of maturity (选举)- you have grown up in the eyes
of the law. You can marry even without your parents'
permission. You can buy or drink alcohol in a bar.
21

You can hold a license to drive a large passenger bus.
You can have a license to sell alcohol. You can become
a member of Parliament.
1. What can you do in Britain when you're 14 years old?   
A. Buy a pet
B. Join the army
C. Drive a motorcycle
D. Buy alcohol
2. In Britain, you can start to drink wine in the restaurant at the age of ________.
A. twelve
B. fourteen
C. sixteen
D. eighteen
3. If your 19-year-old friend is going to live in Britain, you should tell him that he can't __________.
A. drive a motorcycle
B. drive a large passenger bus
C. get a part-time job
D. buy alcohol in a bar
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单项选择题 A型题

下列属于《传染病防治法》规定的乙类传染病的是（）

A.鼠疫

B.流行性感冒

C.人感染高致病性禽流感

D.黑热病

E.霍乱
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