用边界值分析法，假定50 A.X=50，X=80 B.X=50，X=49，X=80，

When I was a child, my parents always told me that I should never talk to strangers. This was part of a whole list of things I should never do: Never accept food or candy from strangers, never get in a car with strangers, and so on.

But if we didn’t start a conversation with strangers, we’d never make new friends. We’d never get a job. We may miss the joy that comes from talking with strangers. And the more people you know, you more chances you can get.

The following passage offers you some advice on how to break the ice.

Don’t just stare at your shoes. Go and say “Hi” to that new guy. It will be easier to break the ice if you know more about different cultures.

British: Beautiful day, isn’t it?

The weather in Britain is changeable. So, it is one of the topics the British care most about. And there’s a simple rule: Say “Yes” whether you agree with the person’s idea on the weather or not. That’s because the British start a conversation using the weather so that they can continue their talk.

French: Where did you go on holiday?

To talk with a French person, the safest way is to ask his or her last holiday. French students enjoy a 10-to-15-day holiday every two months. French employees get more than six weeks of holidays per year.

American: So, where are you from?

The US is so big and people move so often that location is always a source(来源) of talk. You can try to find a connection with the place they’re from. For example, if someone’s from Los Angeles, you could say:“Oh, I have a friend who studied there”

小题1:Why did the writer’s parents tell him not to talk to strangers?

A．It was dangerous.

B．Is wasted time.

C．It was part of the life.

D．Their son didn’t like to talk to strangers.小题2:The best thing to talk with British is          .

A．the fog

B．the rain

C．the weather

D．the wind小题3:To talk with a French person, the safest way is           .

A．his or her family

B．his or her parents

C．his or her friends

D．his or her last holiday小题4:The location is always a source of talk in America because         .

A．They are energetic

B．They love their home

C．Los Angeles is their location

D．The US is so big and people move so often小题5:According to the passage, the writer thinks               .

A．his parents were right

B．he can talk with strangers freely

C．It is necessary to talk with strangers

D．he can find jobs easily

4.6克某物质在氧气中完全燃烧生成CO₂ 8. 8克和H₂O 5.4克，则该有机物中一定含有的元素有                         （填元素名称）；

中川李枝子是日本著名的儿童文学女作家，她的童话是（）。

A.《不不园》

B.《电话里的故事》

C.《淘气包艾米尔》

D.《蓝眼睛的小咪咪》

一台四缸发动机，至少要有（）个气门。

A.4

B.8

C.16

D.20

摆式仪5次测定结果最大差值不能超过（）BPN

A.1

B.2

C.3

D.5