假设消费者就消费大米和小麦两种粮食，大米需求增加，会导致小麦价格（）。
A.升高
B.不变
C.可能不变也可能变化
D.降低
参考答案：D
--- Oh, my God! We just missed the last bus back home.
--- I’m sure we it, but you were not in any hurry.
A．could catch
B．had caught
C．would catch
D．could have caught
下列哪项属于实证
A．解颅B．头形过小C．囟陷D．囟填E．头形过大
