Because of their characteristics as double organisms, it is difficult to classify lichens.
Over 15,000 varieties of lichens have been identified.
Double organisms should always be classified as separate species.
Taxonomists always find it difficult to classify new species of plants.
第1题：
The passage is mainly a discussion of______.
A. the adaptations of organisms to their environments
B. the reasons why organisms have their particular shapes and colors
C. the special way of life of each living thing
D. the hows and whys of the structures of organisms
第2题：
Biodegradation of the oil slick in sea water is assisted by all the following marine micro-organisms which are capable of metabolising oil compounds except ______
A.bacteria
B.moulds
C.yeasts
D.seals
第3题：
Which of the following depreciation methods provides for accelerated depreciation of an asset:
A . Double declining balance.
B . Straight line.
C . Exponential depreciation
D . Double sum of the years digits
E . Double increasing balance
第4题：
Which of the following assignment is not correct？（）
第5题：
A customer has a p650 with a write-intensive database application. Recently the order entry team has complained about unusually slow response times. There have been no complaints from any other departments. Which of the following actions would most likely address the problem？（）
第6题：
Which of the following can best summarize the main idea of this text?（ ）
[A] The moral decaying deserves more research by sociologists.
[B] Marriage break-up stems from sex inequalities.
[C] Husband and wife have different expectations from their marriage.
[D] Conversational patterns between man and wife are different.
第7题：
When rigging a stage，the standing part should be fastened to the horns of a stage with which of the following hitches ________．
A.Clove hitch
B.Timber hitch
C.Marlinespike hitch
D.Double blackwall hitch
第8题：
43 Which of the following depreciation methods provides for accelerated depreciation of an asset: A. Double declining balance.
B. Straight line.
C. Exponential depreciation
D. Double sum of the years digits
E. Double increasing balance
第9题：
CDE is working. However, the customized PATH environment has not been implemented. Which of the following procedures should be performed to activate the implementation?（）
第10题：
Given the following script， why does the output come out as an empty line instead of "dog"（）#!/bin/ksh $VAR=dog echo "${VAR}"