一条蛇突然出现在你的面前，你会非常害怕，并感到心脏在怦怦乱跳，这是由于_____

Xiao Yang _______ Xiao Wang in 2005. They ______ for 7 years.

A．married with; have married

B．married; have married

C．got married to; have been married

D．married with; have been married

下图为古代雅典居民结构的比例图，观察图示信息，对于雅典民主与居民的政治联系，下列叙述准确的是（　　）

A．雅典超半数的居民拥有公民权

B．雅典民主的社会基础为自由民

C．少数奴隶主贵族独享雅典民主

D．外邦人享有雅典最广泛的民主

企业在运用标准跟进法时，可以从（）等方面着手。

A.业绩

B.战略

C.经营

D.业务管理

Required lifesaving equipment on existing vessels may becontinued in use on the vessel if（）.

A.kept on board no more than 2 years

B.inspected and serviced every 6 months

C.destroyed if more than 5 years old

D.maintained in good and serviceable condition

在烟叶干燥脱水曲线中，枴点就是烟叶干燥的（），枴点之上，烟叶处于快速脱水阶段，枴点之下，烟叶处于降速脱水阶段。