上海交易所在A股现金红利派发日程安排中，出息日是( )。A．T-1日 B．T日 C

某微型机的运算速度为2MIPS，则该微型机每秒执行【 】条指令。

根据分子量大小不同进行分离的方法是（）

A．结晶或重结晶

B．溶剂沉淀法

C．酸碱沉淀法

D．盐析法

E．透析法

大量输血后，发生手足搐搦是由于

A．钠离子浓度增高
B．库存血中血小板破坏
C．血钙降低
D．酸性增高
E．钾离子浓度增高

高危妊娠指()。

A．对胎儿有高度危险的妊娠

B．对母亲有高度危险的妊娠

C．对新生儿有高度危险的妊娠

D．凡能危害母儿或导致难产的妊娠

E．凡可能导致难产的妊娠

Losing a job or not being able to find one almost always brings unwelcome changes. If you’’ve lost a job, the first feeling is often one of shock. On top of the loss of income, many people find the whole routine of their life is shattered, their contact with other people reduced, their ambitions halted and their identity as a worker removed.There may be good feelings too — it’’s nice to be able to lie in bed in the morning, to spend more time with children, or to have more time to think — a better job may be just around the corner. But, unless a better job does turn up, chances are the days start getting longer and the time becomes harder to fill. Many people pass through periods of difficulty in sleeping and eating. They feel irritable and depressed, often isolated and lonely.Despite all these problems, unemployment can be a chance for a fresh start. You can discover that it provides an opportunity to sort out or rethink what you want from life and how best you can get it. You can use the time to plan how to find a new job, learn a new skill, develop your hobbies, see if you can run your own business, do some voluntary work in your community or meet new people. It’’s up to you.

The unemployed become finally disillusioned when they________.

A．have nothing more to think about

B．are unable to improve their position

C．get tired of playing with their children

D．can no longer lie in bed in the morning