妈妈从家里到工厂要走3千米,一次,她上班走了2千米,又回家取一很重要工具,再到工

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问题:

妈妈从家里到工厂要走3千米,一次,她上班走了2千米,又回家取一很重要工具,再到工厂.这次妈妈上班一共走了多少千米?

考点:整数的四则混合运算及应用题
题型:解答题

阅读理解。

     Students often want to practice their English outside class. One of the best ways to practice your English

is to speak to a foreigner. This week's question comes from a student who is eager to start a conversation

with the foreigners he sees every day. One student asks, "Is it Okay to try to talk to foreigners I see in the

street?"

     The answer is yes or no, but probably no! If you see a foreigner who looks lost, it is polite to ask him,

"May I help you?" But, otherwise, you should probably let them get on with their business. Situations,

however, do exist (存在) where it is quite all right to talk to foreigners. If a foreigner enters your school,

office, shop or restaurant, for instance (例如), feel free to ask him (for example): 

     — What is your name? 

     — Where do you come from? 

     — What do you think of Beijing? 

     — How long will you stay in Beijing?

     There are also situations where it's Okay to talk to foreigners in public places. If you see a foreigner

alone in a restaurant, bar or coffee shop, it may be appropriate (合适的) to ask him or her:

     — Is this seat free? 

     — Do you mind if I talk to you in English?

     You can probably help them if they are new to China and if they are alone. You may be able to make them

feel more welcome. 

     After a few such questions, you should know whether this person wants to talk to you or not. If they ask

you similar questions, or if they give long, informative answers, you're in luck. If not, then give them their

privacy (独处). Talking to strangers is fun if you choose the right time and place.

1. It is the best way to practice your spoken English with _____. [ ]

A. Japanese

B. Americans

C. your classmates

D. French people

2. From the second paragraph, we can get to know that _____. [ ]

A. it is polite to stop a foreigner to talk with him in the street

B. it is polite to interrupt foreigners in a conversation

C. it is impolite to interrupt a foreigner when he or she is on business

D. it is impolite to help a foreigner find his way

3. When you first meet a foreigner, you should say "_____". [ ]

A. Where are you going?

B. Have you eaten your dinner?

C. Can you help me with my English?

D. Nice to meet you.

4. The writer suggests us that we should _____. [ ]

A. follow the foreigners when we meet them in the street

B. talk with foreigners in an accepted way

C. have a meal with foreigners in a restaurant

D. move to a place where a foreigner lives

5. This passage comes from a newspaper in column _____. [ ]

A. Sports

B. Health

C. Language

D. Business

题型:解答题

形成设计民族风格的原因是什么?

题型:解答题

如图3-7-7所示,浸在水的小球的密度小于水中的密度,固定在轻弹簧的一端,弹簧的另一端固定在容器的底部,当整个系统自由下落时,弹簧长度将(   )

A.变化

B.不变

C.恢复原长

D.条件不足,无法确定

图3-7-7

题型:解答题

断肢(指)再植术后多少时间内较易发生血管危象( )

A.24小时
B.36小时
C.48小时
D.72小时
E.96小时

题型:解答题

为什么强调习作教学要从内容入手?

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