一个物体从离地高h处自由落下，经过时间t落地，则它下落t/3时间时，离地面的高度为：

单词填空(共10小题；每小题0.5分，满分5分)

小题1:Karl has a t________ for music, so he could learn to sing the song in a short period.

小题2:As you know, a good diet is b_________ to your health.       

小题3:Education is closely related to the development of a country. So education should be a universal right but not a p__________. 

小题4:I am o_________ with my office work and have hardly any time for housework.

小题5:We hope to have an income of an average a_________ growth rate of 10%.

小题6:The children that _____(目击)the earthquake should be given psychological support.

小题7:The war came to an end, to the _________ (满意) of everybody.

小题8:Mail comes to the _________ (偏僻的) village once a week. 

小题9:I could see James was terrified of being _________(放弃).

小题10:All the students were active in ___________ (捐献) their blood to those in need.

如图所示，在试管内装些水，用橡胶塞塞住，用酒精灯对水加热，一段时间后，观察到橡胶塞突然被推出。在此过程中，燃料燃烧放出热量，通过       的方式使水的内能增加；试管内的水蒸气对橡胶塞做功，水蒸气的       能转化为橡胶塞的机械能。这个实验展示了蒸汽机的基本工作原理。

肱二头肌在使前臂做旋后运动时，常伴有肱三头肌收缩。此时，肱三头肌被称之为（）

A.主动肌

B.拮抗肌

C.协同肌

D.固定肌

E.伸肌

若有定义：int x=0，*p=&x；则语句printf("%d\n",*p)；的输出结果是( )。

A．随机值

B．0

C．x的地址

D．p的地址

警察虽然随着国家的产生而产生，但是警察同国家不一样，它不是阶级矛盾不可调和的产物。 ( )