把线段两端无限延长，就得到一条______；把线段的一端无限延长，就得到一条__

小题1: He _____ (weight) only 70 kilos now after taking a balanced diet.

小题2: Sometimes, body language in communication is a wonderful way _____ (express) ourselves.

小题3: Enough exercise outdoors can make us _____ (精力充沛的).

小题4:There is no doubt that Moyan is a great _____ (succeed) with Nobel Prize.

小题5:The government should encourage social groups to care for the disabled who

(have) difficulty in life.

小题6:The songs _____ (full) of strong feelings remind us of the “good old days”.

小题7: Some inventions that led to the colorful movies are on show, _____ (include) cameras.

小题8:New technology _____ (提供) us with more chances to know about the society.

小题9: — Is Mr. Black still single?

— No, he _____ (结婚) for two months by now.

依照《处方药与非处方药分类管理办法(试行)》，非处方药标签和说明书除符合相关规定外，用语应当

A．专业、科学、明确，便于使用

B．科学、易懂，便于消费者自行判断、选择和使用

C．便于医师判断、选择和使用

D．便于药师判断、选择和使用

E．由企业自行决定

暗视野显微镜最高可分辨（）

A.0.01μm

B.0.02μm

C.0.03μm

D.0.04μm

E.0.05μm

影响大气扩散能力的主要动力因子是( )。

A．风和大气扩散参数
B．风和湍流
C．大气稳定度和温度层结
D．温度层结和湍流

轻声是一种音变现象，它的发音特点是？