不定项选择如图所示的各图线中表示交变电流的是( ) A. B. C. D.

题型:不定项选择

问题:

不定项选择
如图所示的各图线中表示交变电流的是(   )
A.
B.
C.
D.
考点:交变电流的图像
题型:不定项选择

编制一个好的程序,首先要确保它的正确性和可靠性,除此以外,通常更注重源程序的 (66)
还应强调良好的编程风格,例如,选择标识符的名字时应考虑 (67) ;在书写语句时应考虑 (68)
在书写功能性注解时应考虑 (69)
源程序中应包含一些内部文档,以帮助阅读和理解源程序,源程序的内部文档通常包括选择合适的标识符、注解和 (70)

A.把多个短的语句写在同一行中,以减少源程序的行数
B.尽量使用标准文本以外的有特殊功效的语句,以提高程序的功效
C.尽量消除表达式中的括号,以简化表达式
D.避免使用测试条件”非”,以提高程序的可读性

题型:不定项选择

Habit is any action that we have performed so often that it becomes something that we do almost without thinking. Some of them are thought to be bad habits. People spend countless hours and dollars each year trying to get rid of these bad habits but often fail. Why? Change is hard work and there is no shortcut to achieve it. However, there is still some advice for you to follow.

First, look at why you do it. In other words, what’s the result of doing this thing? If your bad habit is shouting at people when you are unhappy or under pressure, what do you get from it? It may make you feel a little better for the moment. Or maybe you have a bad habit of leaving your homework undone. The result could be that you get more time to spend on the Internet!

Next, take a look on the other hand. What are you losing because of your habit? Shouting at other people is a bad habit because it makes people around you feel bad and unhappy. Leaving your homework undone is a bad habit because you may be punished by your teacher. Having more Internet time means that you are losing the chance to learn the things that you need to learn. When you think that way, you’ll find that it’s not wise to keep your bad habit! Now it is time to make a decision. What will you choose? I’m sure you will choose to do what you think is more important.

小题1:From the first paragraph we know that __________.

A.a habit is a terrible thing that we can never change

B.people take countless hours and dollars to get rid of habits

C.none of the people who try to break bad habits are successful

D.though it is difficult, we can still do something about our bad habits小题2:The underlined sentence “there is no shortcut to achieve it” means that __________.

A.it is not easy to get rid of bad habits

B.there is a long way and a short way

C.something dangerous may happen

D.we must cut it in a short time.小题3:According to the reading, if you want to get rid of your habits, you have to __________.

A.talk to others when you are in low spirits

B.know why you do what you do

C.finish your homework first

D.spend less time on the Internet小题4:Which of the following does NOT happen because of a bad habit according to the reading?

A.You are punished later.

B.Making people around you feel unhappy.

C.You feel a little better after shouting at others.

D.You leave your homework at home by accident.小题5: The main purpose of this passage is to __________.

A.introduce and describe

B.complain and disagree

C.explain and advise

D.discuss and argue

题型:不定项选择

补全对话。根据上下文把下面的对话补充完整。

A: What are you going to do after the exams?

B: 1__________________. Do you have any good ideas?

A: Yes, I went to relax myself. So I want to go on a trip.

B: Sounds great! 2__________________?

A: I'd like to go somewhere interesting and exciting.

B: There is a new zoo in Changsha 3__________________?

A: No, I haven't. What about you?

B: 4__________________. But my cousin went there last

    week. He told me people could watch the animals there in

    a more natural environment.

A: Really? That sounds interesting. Let's go to the zoo together.

B: OK. We can go there by bus tomorrow.

A: 5__________________? It's not too far from here. And riding

    a bike is a kind of good exercise.

B: OK. I can't wait.

题型:不定项选择

治疗剂量与中毒剂量很接近的药物是碳酸锂。

题型:不定项选择

仪用压缩空气

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