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【单选题】
中国古代技术著名文献《九章算术》的编纂者认为:“掌握数学知识的人应该满足于能够解答生活实践中提出的应用问题，数学的理论虽属可知，但很难全部搞清楚，学者应该有适可而止的态度。”这说明中国古代技术的主要特点是 ( ) ？A.
注重实验
B.
理论探究
C.
适可而止
D.
注重实用
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举一反三
【单选题】这次事故给了他一个教训,从那以后他再也没有酒后开过车。
A.
The accident taught him a lesson, and from then on, he has never driven a car after drinking.
B.
The accident taught him a lesson, and from now on, he has never driven a car after drinking.
C.
The accident taught him a class, and from then on, he has never driven a car after drinking.
D.
The accident gave him a lesson, and from now on, he has never driven a car after drinking.
【单选题】He has never driven his own car to work. B) He moved to Washington, D.C. 6 years ago. C) He was hit by a car twice in Portland. D) He now lived in Washington, D.C.
A.
He has never driven his own car to work.
B.
He moved to Washington, D.
【单选题】这次事故给了他一个教训,从那以后他再也没有酒后开过车。
A.
The accident taught him a lesson, and he has never driven a car.
B.
It taught him a lesson, and from then on, he has never driven a car after drinking.
C.
The accident taught him a lesson, and from now on, he has never driven a car.
D.
The accident taught him a lesson, and from then on, he has never driven a car after drinking.
【单选题】Once one was dependent on a kind of substance, he/she______.
A.
would require more and more of the substance
B.
could recover and never need the substance again
C.
would feel unpleasant with more of the substance
D.
must have the substance everyday
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