海牙国际私法会议是在国际私法统一进程中发挥了巨大作用的国际组织。()
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Do they have______air-conditioners for cooling the room in summer？
A. a bit of
B. enough
C. a great deal of
D. many a
The primary goal of Informative Speaking is______.
A. to let audience learn something
B. to influence what an audience thinks or does
C. to take precautions against counterpersuasion
D. to motivate an audience to act
用Dim声明的局部变量是动态动态变量，其值在过程执行完后仍保留，而用Stalic声明的局部变量是静态变量，其值在程序执行完后会消失。()
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