判断函数f(x)=-14x2+x,(x≥0)-14x2-x,(x<0)的奇偶性.

题型:解答题

问题:

判断函数f(x)=
-
1
4
x2+x,(x≥0)
-
1
4
x2-x,(x<0)
的奇偶性.
考点:函数的奇偶性、周期性
题型:解答题

下述属于非离子型对比剂的是()

A.泛影葡胺

B.碘必乐

C.异泛影葡胺

D.泛影钠

E.碘化油

题型:解答题

短文改错

此题要求改正所给短文的错误.对标有题号的每一行作出判断:如无错误,在该行右边横线上画一个();如有错误(每行只有一个错误),则按下列情况改正.

此行多一个词:把多余的词用斜线(\\)划掉,在该行右边横线上写出该词,并也用斜线划掉.

此行缺一个词:在缺词处加一个漏字符号(?),在该行右边横线上写出该加的词.

此行错一个词:在错的词下画一横线,在该行右边横线上写出改正后的词.

注意:原行没有错的不要改.

One evening,while my family was watching TV in 1._________

the sitting room,my father began to smoke cigarette. 2._________

Soon the room was full with smoke.Mother asked f ather 3._________

to stop smoking,but father said he was too difficult. 4._________

I sat aside and thought what I could do.Then I had an idea. 5._________

The next day I give a pack of cigarettes to my father 6._________

and whispered to him.Seeing that,mother liked puzzling.7._________

Some time later,mother wondered if father did not smoke any longer. 8._________

Father explained that that the cigarettes I have given him were 9._________

a special kind that they can help give up smoking.We all laughed. 10._________

题型:解答题

鸡血藤来源于

A.木通科
B.豆科
C.毛茛科
D.马兜铃科
E.茜草科

题型:解答题

结合我国的国情和你自己的认识,谈谈你对“以药养医”的看法,字数 350字左右,要求:语言流畅,观点鲜明,言之有理。

题型:解答题

玉屏风散与牡蛎散共有的功用是()。

A.固表

B.固冲

C.止遗

D.涩肠

E.补肾

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