警察英模先进事迹的广泛社会传播，先进警察精神的弘扬会对社会整体精神文明水平的提高产生

.His life was devoted to _____the poor out.

A．helping

B．help

C．being helped

D．having helped

下列对血细胞发育过程中形态演变规律的描述哪项是错误的

A．胞浆量由少到多（淋巴细胞例外）

B．核染色质由紧密到疏松

C．核仁显著可见到无

D．核染色质着色淡紫色变深紫色

E．核浆经例由大变小

Which of the following statements best describes humor in China

A．It is more or less the same in all parts of the country.

B．It is drastically different in every part of the country.

C．It is distinguished from Hong Kong.

D．It is more a verbal act than a physical act in the north.

不属于轻体力劳动的是（）

A.办公室工作

B.售货员

C.讲课

D.化学实验操作

E.学生日常活动

人际和谐是评价心理健康的标准之一。（）