小儿多大年龄时巴彬斯基征应为阴性() A.6个月 B.1岁 C.1.5岁 D.2岁

题型:单项选择题

问题:

小儿多大年龄时巴彬斯基征应为阴性()

A.6个月

B.1岁

C.1.5岁

D.2岁

E.2.5岁

考点:神经电生理(脑电图)技术(医学高级)神经系统疾病神经系统疾病题库
题型:单项选择题

寒原盐土属于()。

A.高山土纲

B.盐碱土纲

C.半水成土纲

D.水成土纲

题型:单项选择题

阅读理解。

     Some children want to be writers some day. They mean (意思是) that they want to write stories

or books for people to read. That's good! It's good to write something for people to read! But they

should know that they need to be good (A) ______ first before they are really good writes. They should

read a lot of books, and read for hours and hours every day (B) instead of watching TV and spending

(花费) a lot of time playing games when they are free.

       If you are a good reader, it doesn't take you long to do the reading homework. Then you have time

to read many other books for fun. Because you read so well, (C) 你会对阅读有更多的乐趣, and you

want to look for more books to read.

    Before you decide (决定) to be a good writer, you'd better say to yourself," I must read and read and

read more and more!"

1. 在(A)处填入一个恰当的词。

    _________________________________  

2. 把(B)处划线句子翻译成汉语。

    _________________________________   

3. 把(C)处汉语句子翻译成英语。 

    _________________________________  

判断正(T)误(F)。

( )4. A writer can't watch TV or play games.  

( )5. Reading can help you write well.

题型:单项选择题

设数列{an}的前n项和为Sn,已知a1+2a2+3a3+…+nan=(n-1)Sn+2n(n∈N*).

(1)求a2,a3的值;

(2)求证:数列{Sn+2}是等比数列.

题型:单项选择题

如果需求的增加和供给的减少同时发生,则()

A.均衡价格和均衡数量均上升

B.均衡价格和均衡数量均下降

C.均衡价格上升,均衡数量的变化无法确定

D.均衡价格下降,均衡数量的变化无法确定

E.均衡价格和均衡数量均无法确定

题型:单项选择题

在水合物的形成温度刚一()输气管线的气流温度时,水合物就立即开始分解。

A.接近

B.等于

C.高于

D.低于

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