如图所示,电视机的遥控器能发射一种叫红外线的不可见光,有时即使遥控器对着电视机对

题型:填空题

问题:

如图所示,电视机的遥控器能发射一种叫红外线的不可见光,有时即使遥控器对着电视机对面的墙按下按钮,也能控制电视机,这是利用______现象来实现控制的.

考点:光的反射现象
题型:填空题

分解因式2x2-4x+2的最终结果是(  )

A.2x(x-2)

B.2(x2-2x+1)

C.2(x-1)2

D.(2x-2)2

题型:填空题

某男,36岁。腰酸膝软,眩晕耳鸣,精神萎靡,记忆力下降,性机能减退。最常见的病因是()

A.劳力过度

B.房劳过度

C.劳神过度

D.思虑过度

E.安逸过度

题型:填空题

Most research indicates that there is, at best, only a weak relationship between budget deficits and interest rates; higher deficits may simply be matched by high savings. This statement most closely reflects which one of the following views of fiscal policy()

A. Keynesian theory.

B. Crowding-out theory.

C. New classical theory.

题型:填空题

You can find language pollution whenever you open a newspaper or turn on your TV set, listen to a popular song at various advertisements. Language pollution exists almost everywhere and can be seen in the following places;

1. Chinese character are written in the complex(复杂的)form. Although simplified(简单的) Chinese characters were accepted for use many years ago, it seems that more and more people like Chinese characters written in the complex form.

2. Many goods are produced in China but carry foreign names, which sound strange and have no meaning at all.

3. Words and expressions being used have a bad meaning. “Ba”(霸), which means bully(巨大的)in Chinese, is one example. Now there are a lot of goods, restaurants, even factories or firms, with “Ba” in their names.

4. There are too many incorrect grammatical expressions. Some films have strange names and incorrect grammatical structures(结构). “Ai ni mei shang liang”, which means “I love you without consulting”, is grammatically incorrect and this kind of expression is now becoming popular.

Some language experts point out that language pollution must be done away with, which is an idea shared by many others and myself.

小题1:.The writer of the passage suggests that______.

A.something be done to make our language pure

B.the Chinese language not have the word “Ba”

C.everything have a good name and a good meaning

D.everybody try their best to stop language pollution小题2:. What the writer wants to say is that_______.

A.great difference exists between the Chinese characters written in the complex form and simplified form

B.language used by our newspapers, TV programs, pop songs and advertisements are getting polluted

C.many people agree with the experts on language pollution in China

D.some film writers haven’t studied Chinese grammar小题3:.The underlined expression “done away with” in the last paragraph means______.

A.got away

B.recycled

C.cleaned

D.ended小题4:. Which of the following is the best title of the passage?

A.More Attention to Grammar.

B.Experts’ Good Advice.

C.Films with Strange Names.

D.Pollution of our Language.

题型:填空题

在Word中,保存文档的方法有()

A.选择“工具”菜单的“选项”项,选择“保存”选项卡

B.选择“文件”菜单的“保存”项

C.单击常用工具栏上的“保存”按钮

D.快捷键CTRL+SE.关闭Word文档,如果在关闭时出现了“是否保存文档”的提示,则选择“是”

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