《桃花扇・惊悟》中的侯方域面对国破家亡不知何去何从时，选择了出家学道。
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土石坝排水设备有哪些类型？各有什么作用？试说明它们的优缺点和适用条件？
Thus______________between England and France which was to last for 100 years.
A. broke out a war
B. did a war break out
C. a war broke out
D. was a war broken
当容器的直径小到一定数值时，气体混合物便不能自燃。
A. 正确
B. 错误
An iron and steel works, with several satellite factories,______________in that city now.
A. is built
B. is being built
C. were built
D. are being built
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