不属于肠道病毒的是（）
A.脊髓灰质炎病毒
B.柯萨奇病毒
C.埃可病毒
D.EBV
E.轮状病毒
参考答案：D
“φ=π”是“曲线y=sin（2x+φ）过坐标原点”的（ ）
A．充分而不必要条件
B．必要而不充分条件
C．充分必要条件
D．既不充分也不必要条件
The teacher asked a very difficult question. It was Ted who finally _____ a good answer.
A．came up with
B．had raised
C．went through with
D．put up with
