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【单选题】
( )是计算机病毒最重要的特征,是判断一段程序是否为计算机病毒的依据。A.
． 传染性
B.
． 破坏性
C.
． 非授权可执行性
D.
． 潜伏性
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举一反三
【单选题】Which of the following words best describes the interest in cheese in England today?
A.
Decreased.
B.
Limited.
C.
Renewed.
D.
Intensified.
【简答题】Without someone to——for advice， the best choice can be difficult for Tom. (A)turn to (B)turn up (C) turn over (D) turn on
【单选题】Which of the following is NOT best to consider when an introduction?
A.
Media attention or publications.
B.
Educational achievements.
C.
Any kind of humor.
D.
Accomplishments and honors.
【单选题】Which of the following statement is the best description of a summary?
A.
When you are a summary, you need to reduce the number of main points.
B.
When you are a summary, you need to eliminate all the examples.
C.
When you are a summary, you need to avoid abstract words.
D.
When you are a summary, you need to omit wordy sentences and phrases.
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