牙周病的全身易感因素不包括（）。 A.肾炎 B.糖尿病 C.精神压力 D.吸烟 E.

下列4条指令，需要使用DX 寄存器的指令有( )条。
IN AX，20H
MUL BX
DIV BL
OUT 20H，AL

A．1

B．2

C．3

D．4

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

What is your favourite colour? Do you like yellow, orange, red? ___71___. Do you prefer greys and blues? Then you are probably quiet, shy, and you would rather follow than lead. You tend to be pessimist. At least, this is what psychologists tell us, and they should know, because they have been seriously studying the meaning of colour preference, as well as the effect that colours have on human beings. ___72___ . If you happen to love brown, you did so, as soon as you opened your eyes, or at least as soon as you could see clearly.

___73___. A yellow room makes most people feel more cheerful and more relaxed than a dark green one; and a red dress brings warmth and cheer to the saddest winter day. ___74___ . A black bridge over the Thames River, near London, used to be the scene of more suicides(自杀) than any other bridge in the area---until it was repainted green. The number of suicide attempts immediately fell sharply. Perhaps it would have fallen even more if the bridge had been done in pink or baby blue.

___75___. It is an established fact that factory workers work better, harder, and have fewer accidents when their machines are painted orange rather than black or grey.

A．On the other hand, black is depressing.

B．They tell us, among other facts, that we do not choose our favourite colour as grow up --- we are born with our preference.

C．The rooms are painted in different colours as you like.

D．If you do, you must be an optimist, a leader, an active person who enjoys life, people and excitement.E. Light and bright colours make people not only happier but more active.

F. Life is like a picture or a poem, full of different colours.

G. Colours do influence our moods---there is no doubt about it

三叉神经痛最常发生的部位是三叉神经的（）.

A.第一支

B.第二支

C.第一、三支

D.第二、三支

E.第一、二支

纪念圆明园罹难150周年筹委会表示，2010年l0月18日将邀多国嘉宾出席纪念圆明园罹难150周年纪念活动，一同纪念和保护这一人类共同的文化遗产。对这一文化遗产认识正确的是（）

①是各个国家和民族的财富，对研究人类文明的演进没有意义

②对于展珍世界文化的多样性具有独特的作用

③是一个国家和民族历史文化成就的重要标志

④是一个国家民族精神的集中展示

A.①②

B.②③

C.③④

D.①④

镇静钢在钢包中回磷现象比沸腾钢和半镇静钢（）

A、相差不大

B、弱得多

C、严重得多