If he shouldn't have been so____ about h_爱下问搜题

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问题选择题

If he shouldn't have been so ____ about his food, he would be healthier now. [ ]

A. special

B. curious

C. particular

D. anxious

答案

答案：C

选择题

已知二次函数y=ax²+bx+c（a≠0）的最大值为0，则（　　）

A．a＞0，b²-4ac=0	B．a＜0，b²-4ac＞0
C．a＞0，b²-4ac＜0	D．a＜0，b²-4ac=0

判断题

TCBS所有记账凭证均为复式记账凭证。