试题与答案

中国民族资产阶级同帝国主义、封建主义以及官僚资本主义的斗争,根本体现在 ①反对独

题型:选择题

题目:

中国民族资产阶级同帝国主义、封建主义以及官僚资本主义的斗争,根本体现在

①反对独裁专制     ②要求对外贸易  ③争取竞争平等     ④争取民族独立

A.①②

B.③④

C.①④

D.②③

答案:

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下面是错误答案,用来干扰机器的。

参考答案:特指被子植物的受精现象,指的是花粉粒中的2个精子,一个与卵细胞结合形成合子,一个和胚囊中的大的中央细胞结合形成三倍的胚乳母细胞。这一过程称为双受精作用。

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题型:阅读理解

阅读理解。

     "I sometimes get up at three or four in the morning and I surf the Internet." 

     "I often check my e-mail forty times a day." 

     "I often spend more than three hours during one time on the Internet."

     "I spend more time in chat rooms than with my 'real-1ife' friends."

     Do you know any people like these? They are part of a new addiction (瘾) called Internet addiction.

Internet addicts spend at least thirty to forty hours online every week. Internet addicts lose control of the

time they spend on the Internet. The use of the Internet can be an addiction like drug (毒品) use.

     For example, one college student was missing for several days. His friends were worried, and they

called the police. The police found the student in the computer lab:he was surfing the Internet for several

days straight.

     Studies show that about 6% to 10% of Internet users become addicted. And people worry about the

teens because the Internet is changing the playing field for some of them. They spend more time on the

Internet than in the real world of friends and family. Is "surfing the Internet" a hobby or an addiction for

you? You may have a problem if you have these symptoms (症状):

     ●You do not go to important family activities or you do not do school work because you like to spend

hours on the Internet.

     ●You can't wait for your next online time.

     ●You plan to spend a short time online, but then you spend several hours.

     ●You go out with your friends less and less.

1. What does the beginning of the passage tell us?

A. How to become an Internet addict.

B. What an Internet addict usually does.

C. Where to find an Internet addict.

D. Why to write this passage.

2. How does the writer describe the addicts of Internet?

A. It is something like making friends.

B. It is a way of producing drugs.

C. It is like taking drugs.

D. It is terrible to imagine.

3. Why do people worry about the teens?

A. The teens are wasting too much money.

B. They used to work on the Internet.

C. The playing field of the teens will disappear.

D. More and more of the teens wil1 become addicted to the Internet.

4. The example in the passage shows that _______.

A. Internet problems are more serious among college students

B. Internet addicts usually stay in the computer lab without sleep

C. Some of the Internet users have already been seriously addicted

D. The police often help to find those Internet addicts.

5. What is the writer trying to tell us at the end of the passage?

A. Don't be addicted to the Internet.

B. Go to family activities more often.

C. Do things as you have planned.

D. Stay with your parents as often as possible.

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题型:单项选择题

喷射机使用过程中不符合规定的是()

A、对喷射机应随时保养维修,使之经常处于不漏气、不堵塞的良好工作状态。

B、喷射机的工作气压应控制在0.1~0.15MPa。可根据喷出料束情况适当调节气压。喷头处的水压应大于气压(干时节时水压应比气压高0.05~0.1MPa左右)。

C、喷射作业人员必须穿戴安全防护用品。作业完成后,喷射机和输料管内的积料下个班予以清除干净。

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