患者女性，79岁，因“心悸、胸闷，伴周身乏力6个月，加重1个月”来诊。患者慢性喘息性

在Word文字处理软件的界面上，单击工具栏上的“打印”按钮

，其作用是 (2) ，使所有标点符号都占一个汉字宽度的排版方式称为 (3) 。

A．打印当前页

B．打印文档全文

C．打印预览

D．弹出打印对话框进行设置

一个圆柱体和一个圆锥体的体积与高都相等，圆柱的底面积是18平方厘米，圆锥的底面积是______平方厘米．

Do you know blood types?

Special care must be taken in selecting new blood for a badly injured person, who would be killed by the transfusion (输血) if the blood is too different from his own.

There are four basic types of blood A. B. A B. and O. Blood type, like hair and height, comes from parents. Basically, A and B can not be mixed. AB, sometimes called the universal recipient (万能受血者), may receive A or B,. O type, often called the universal donor (万能输血者), gives his blood to any other group. Patients usually receive nothing, but salt or plasma (血浆) until their blood can be matched as exactly as possible in the blood bank of a hospital. There is a relationship between your blood type and your nationality (国籍). Among Europeans, about 42 % have type A while 45 % have type O. The fewest is the type B.

小题1:Which of the following show the correct relationship in blood transfusion ("→"means giving blood to...)?

A．

B．

C．

D．小题2:Usually person who has been injured and lost too much blood should be given a blood transfusion______.

A．after he receives salt and plasma　

B．before he feels uncomfortable

C．when the new blood fits his body　

D．as soon as accident happens小题3:From this passage we can know that among Europeans ______ 13 % have the type B.

A. about 　　B. no more than 　　C. less than 　　D. at most

核仁的纤维中心实际上是（）。

A.装配的核糖体亚基

B.转录的rRNA分子

C.rDNA袢环

D.以上都不是

行业寿命周期中，投资者如能在扩张期的适当价位人市，则其收益会随着公司效益的增长而上升。