味觉发育的关键时期为() A.1~2个月 B.2~3个月 C.3~4个月 D.4~5

题型:单项选择题

问题:

味觉发育的关键时期为()

A.1~2个月

B.2~3个月

C.3~4个月

D.4~5个月

E.6~9个月

考点:儿内科(医学高级)儿内科综合练习儿内科综合练习题库
题型:单项选择题

第II卷(共35分)

第四部分:写作(共两节,满分35分)

第一节:短文改错(共10小题;每小题1分,满分10分)

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,在该行右边横线上划一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:

该行多一个词: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。

该行缺一个词: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。

该行错一个词:在错的词下划一横线,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。

A survey basing on 1 ,000 students found that half of the pupils and 80%   76._______

of the middle school students sleeps less than nine hours every night.77._______

And too many homework given by school teachers and parents is       78._______

the main reason .Other reason lies in students' bad habits. Some            79_______

students, for example, are absent-minded while doing his homework .         80_______

and some waste their after-class time. The third reason is that some       81.________

students have to get up early on week-days to get school far away         82._________    

from home. Experts are calling at schools and parents to cut down on       83.________

the amount of homework. And students should make a good use of their time. 84.________

And it would be well if they could choose to study in a nearby school.       85________

题型:单项选择题

实验室里测量质量的仪器是___________,测量液体体积的仪器是_____________。

题型:单项选择题

如图所示,光滑水平地面静止放着质量m=10 kg的木箱,与水平方向成θ=60°的恒力F作用于物体,恒力F=2.0 N.当木箱在力F作用下由静止开始运动4.0 s后,求:                                     

小题1:4.0 s末物体的速度大小;

小题2:4s内力F所做的功;

小题3:4.0 s末力F的瞬时功率

题型:单项选择题

偏振光是指在垂直光波传播方向的平面内沿一固定方向振动的光。

题型:单项选择题

保险在形式上是一种______活动,而实质上是一种特殊商品的交换行为。

A.财务安排
B.经济保障
C.委托关系的确定
D.社会保障

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