下列哪项是错误的( )A．HAV属RNA病毒 B．HBV属DNA病毒 C．HDV是缺

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问题单项选择题

下列哪项是错误的( )

A．HAV属RNA病毒

B．HBV属DNA病毒

C．HDV是缺陷病毒，属DNA病毒

D．HCV属RNA病毒

E．HEV属RNA病毒

答案

参考答案：C

选择题

若集合M={-1，0，1}，N={y|y=sinx，x∈M}，则M∩N=（　　）

A．{1}

B．{0}

C．{-1}

D．{-1，0，1}

选择题

The teacher suggested that her students__________experiences with ESP.

A．write a composition on their

B．to write composition about the

C．wrote some compositions of his or her

D．had written any compositions for his