Why did Einstein leave Germany when Hitler came to power
A. Because he had been persecuted all the time.
Because he anticipated Nazi persecution.
C. Because he wanted to go to support Zionism.
D. Because he was in a very difficult position.
( )的实质是一种条件控制，病毒程序可以根据设计者的要求，在一定条件下实施攻击。
A. 潜伏
B. 隐蔽
C. 触发
D. 传染
22（）
A. nine-ten
B. ninth- ten
C. nine-tenth
D. nine-tenths
What kind of meetings will alcoholics go to during the time of rehabilitation
A. The meeting where alcoholics drink together.
B. The meeting where alcoholics pay for their own drinks.
C. The meeting where alcoholics meet and talk and help each other.
D. The meeting where alcoholics are hospitalized and taken care o
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