已知函数y=-x+2,如果函数值y>3,那么相应的自变量x的取值范围是_____

题型:填空题

问题:

已知函数y=-x+2,如果函数值y>3,那么相应的自变量x的取值范围是______.

考点:一次函数的定义
题型:填空题

Now you’ve finished three years of English study. There’s one way to demonstrate(展示) what you’ve learned-take a test!

Do you have any special methods you use to help you do better on a test? How well you do is often a matter of how well prepared you are. Here are some ways to make sure you’re at your best on test days.

Go to bed early. The night before a test is not the time to stay up watching TV. You want to be rested and wide-awake for test day.

Have a good breakfast. Test day isn’t a morning for donuts. Nor is it a time to starve(挨饿) yourself. Eat plenty of low-sugar, high-energy food to keep your brain and body working their best.

Be prepared. Make sure you have two pencils and anything else you were asked to bring.

Watch the numbers. Make sure that the number of the items(项目) on your answer sheet matches the number of the question.

Look over all the answer choices. Don’t assume(假定) that choice A is correct until you’ve checked the others. You may find a better one. And it is wrong to eliminate(排除) any choice that you can see at once. You’ll have a better chance of finding the right answer.

Check the clock. Make sure you allow yourself enough time to answer every question and go back and check your answers. Don’t spend too much time on any difficult question. Skip it and come back to it later.

Keep up with your schoolwork all year long. That’s how you get the skills you need for

taking test.

小题1: Is taking a test a way to demonstrate what you’ve learned?

小题2: How many ways are mentioned in this passage?

小题3: What should you take to prepare for a test?

小题4:What do you do if you meet any difficult question?

小题5:What’s the passage mainly about?

题型:填空题

乳腺癌最常见的病理组织学类型是

A.髓样癌

B.湿疹样癌

C.浸润性导管癌

D.浸润性小叶癌

E.鳞状细胞癌

题型:填空题

如图是“生物圈碳-氧平衡”示意图,分析回答:

(1)推测图中A、B所代表的生理活动:A是______作用、B是______作用.

(2)A、B两个过程中,能够降低大气二氧化碳含量的是______.(填字母)

(3)以下叙述不符合事实的是(  )

A.碳-氧平衡是指生物圈中二氧化碳和氧气的相对平衡

B.碳-氧平衡是指生物圈中二氧化碳和氧气各占50%

C.人类生活和工业生产加剧了生物圈中二氧化碳的排放

D.植物的光合作用吸收二氧化碳,有利于生物圈中的碳-氧平衡

(4)在维持生物圈碳-氧平衡方面,人类可以做些什么?______.

题型:填空题

钢T12和20的加热上限温度是否一样?为什么?

题型:填空题

根据工作压力的不同,除氧器分为哪三种?

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