Li Ming is a school boy .He is twelve .H

题型:阅读理解

问题:

Li Ming is a school boy .He is twelve .He lives in Shanghai .He studies in the No.3 Middle School .He gets up at half past five every day .He reads English and Chinese in the morning .He has breakfast at seven .After that ,he goes to school with his friends .They have four classes in the morning and two in the afternoon .In the evening he does his homework at home .But he often watches TV on Saturday evening .Li Ming likes drawing .He draws better than his sister .He likes reading English books .Now he is reading an English book in the room .

6..Li Ming is a ____________.     .

A .student          B .girl         C .teacher      D .doctor

7..Li Ming gets up ____________every day .

A .at seven         B .at five thirty   Cat six          D .very late

8.Li Ming does his homework ____________.     .

A .At night.    B .at school       C .at home      D .in the afternoon .

9.Li Ming likes____________.       .

A .English and Chinese              B .playing football

C .growing flowers              D .drawing and reading

10.Li Ming has ____________. classes at school every day .

A .four             B .five         C .three        D .six

考点:人物传记类阅读故事类阅读
题型:阅读理解

已知函数f(x)=x3-3ax+2(其中a为常数)有极大值18.

(Ⅰ)求a的值;

(Ⅱ)若曲线y=f(x)过原点的切线与函数g(x)=b-lnx的图象有两个交点,试求b的取值范围.

题型:阅读理解

2000年,国家药品监督管理局发布通告暂停使用和销售含苯丙醇胺的药品制剂。苯丙醇胺(英文缩写为PPA)结构简式如下

其中φ-代表苯基。苯丙醇胺是一种一取代苯,取代基是

(1)PPA的分子式是:________。

(2)它的取代基中有两个官能团,名称是_______基和_______基(请填写汉字)。

(3)将φ-、H2N-、HO-在碳链上的位置作变换,可以写出多种同分异构体,其中5 种的结构简式是:

请写出另外4种同分异构体的结构简式(不要写出-OH和-NH2连在同一个碳原子上的异构体;写出多于4种的要扣分)________、________、________、________。

题型:阅读理解

“征免性质”栏应填( )

A.101

B.502

C.503

D.789

题型:阅读理解

超低温、长时间冷冻会使新鲜蔬菜内部组织冻伤。( )

题型:阅读理解

外墙保温材料应选用()。

A.导热系数大,热容量小,传热性好的材料

B.导热系数大,热容量大,传热性差的材料

C.导热系数小,热容量大,绝热性好的材料

D.导热系数小,热容量小,绝热性差的材料

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