适宜作丧事用花的主要花材有（）。 A.马蹄莲 B.黄、白菊 C.勿忘我 D.白百合

阅读下面短文，用文中括号内所给动词填空。

     Since 1946, one of the most important inventions has been the computer. It has been changing all our

lives.

     The first computer   _1   _ (build) in 1946.It    2     (be) as large as a room and quite difficult and slow     3     ( use). But since the invention of silicon " chip " (硅片) ,  computers      4     ( become)  smaller,  easier and faster to operate. Some computers are as small as TV sets. Some can even      5     (make)

smaller than a book. And computers      6    ( get) smaller and smaller all the time. Who knows what the

computers of tomorrow     7    (be) like?

     There      8     (be)  several reasons why the computer is useful to us. First,  a lot of information can be put into computers. Second, the computer _   9     (work) very quickly thousands of times faster than a

man and it will not be tired. Third, modern computers can be built into other kinds of machines, like radios, cars and planes. So today people can spend less time     10    ( do) more work with a computer.

1.______ 2. _______3. _______4. _______ 5. ______

6. ______7. _______8. _______9. _______10. ______

找规律填数．2573、______、______、5873、6973．

秘书钟苗在进行会议记录时，有时跟不上发言者，出现内容漏记，她应采用( )的方法弥补。

A．提示主持人先停止发言

B．提示发言人说话速度放慢

C．在漏记之处作出记号，用磁带内容修正

D．提示主持人请发言人就某些术语和观点做出解释

Weil髓鞘染色法的正确结果是（）

A.髓鞘蓝黑色，背景淡灰色

B.髓鞘黑色，背景淡黄色

C.髓鞘蓝色，背景淡黄色

D.髓鞘蓝黑色，背景红色

E.髓鞘蓝绿色，背景淡灰色

草坪草在偏酸即PH值小于（）的土壤上生长不良。

A.5.5

B.6.0

C.6.5

D.7.0