假定甲商品和乙商品是替代品,如果市场上甲商品的价格大幅度下降,那么,在其他条件不变时①乙商品的需求量减少 ②乙商品的需求量增加③甲商品的需求量减少 ④甲商品的需求量增加
The four modernizations in China will_____________ sooner or later.
_______ of us are interested in dancing. A. No one B. None C. Any
-Who is in the classroom? -_________. A. None B. No one C. No
-How many books are there in the box? -_______. A. None B. No one C. No
There _________a book and three pens on my desk just now,but now there is nothing on it. A. had B. were C. was