线锤是测量检验的工具，一般用来检查装配件的直线度。( )
参考答案：错
—Do you believe _______ you read in ads?
—No, only some of them. [ ]
A. something
B. anything
C. nothing
D. everything
引起小儿秋季腹泻最常见的病毒是
A．腺病毒B．轮状病毒C．埃柯病毒D．柯萨奇病毒E．呼肠孤病毒
