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【判断题】
病毒的基本形态有球形、卵圆形、砖形、、丝状、蝌蚪状等A.
正确
B.
错误
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举一反三
【简答题】列举出五种Linux的发行版本。
【单选题】Passage One Questions 21 to 25 are based on the following passage. During the early years of this century，wheat was seen as the very lifeblood of Western Canada. When the crops were good，the economy w...
A.
difficult to produce in large quantities
B.
susceptible to many parasites(寄生虫)
C.
essential to the health of the country
D.
expensive to gather and transport
【简答题】列举出五种Linux的发行版本。
【单选题】Let's leave the things as they are ______; we can always make changes later on if necessary.
A.
at present
B.
to the present
C.
for the present
D.
up to the present
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