移栽植物时，常选择傍晚，有时还要去掉一些叶片，这样做的目的是[ ] A．减少水分

关于出境货物的出运期限及有关检验检疫证单的有效期，下列表述正确的有( )。

A．鲜活类货物为14天

B．交通工具卫生证书用于船舶的有效期为12个月

C．信用证要求装运港装船时检验，签发证单日期为提单日期5天内签发(含提单日)

D．出口换证凭单以标明的检验检疫有效期为准

下颌骨骨折有下唇麻木时，骨折可能位于下颌骨的

A．下颌孔与颏孔之间

B．升支

C．喙突

D．髁状突颈部

E．颏部

08-32捣固车使用激光拨道前应将发射小车推至捣固车前方（）左右处。

A、200m

B、300m

C、400m

D、500m

阅读理解。

    On October 12, 1987, some Chinese scientists were working at the computers to look for

information they needed. Suddenly they saw a lot of very bright spots (点) crossing the

computers' screens. At the same time the computers were working much slower. To find out

what was happening they stopped their work to check some parts of the computers. To their

horror (恐惧), they found out that most of their stored information was got rid of (除掉)

by computer viruses! Obviously all these computers had been infected (感染) by computer

viruses.

    It is said that the computer viruses were made by a group of young man fond of playing

tricks. They all had excellent education. They created the viruses just to show their

intelligence. (才智) These kinds of computer viruses are named Jerusalem (耶路撒冷)

Viruses. These viruses can stay in computers for a long time. When the time comes they

will attack the computers by lowering the function (功能), damaging their normal programs

or even getting rid of all the information.

    We now come to know that Jerusalem Viruses often attack computers on Fridays and that

they are spreading (传播) to a list of computers. Among the countries that suffering

computer viruses are Britain, Australia, Switzerland and the U.S. But till now, how to

get rid of the terrible remains a problem.

1. The group of young men created the viruses to ______. [ ]

A. damage the computers

B. test their ability

C. tell the world that they were intelligent

D. play a trick on operators of the computers

2. According to the passage, computer viruses seem to ______.[ ]

A. have been in nature for years

B. exist (存在) in any computers

C. be difficult to get rid of at present

D. be able to be got rid of in the near future

3. The most serious damage caused by the viruses is that ______. [ ]

A. the computer's functions are lowered

B. the normal programs are damaged

C. all the information stored in the computers is gone

D. the computers infected by the viruses can no longer be used

4. According to the passage, which of the following is true? [ ]

A. Four countries found their computers were infected by viruses.

B. The viruses will come to a new computer after staying in the old one for some time.

C. Scientists are trying to find a way to get rid of the viruses.

D. The Jerusalem Viruses are a great harm to human health.

程序设计语言无二义性。