未出现凝集而判定为阳性的试验是（）
A.间接凝集试验
B.反向间接凝集试验
C.间接凝集抑制试验
D.协同凝集试验
E.Coombs试验
参考答案：C
下面的式子中，（ ）是方程．
A．45÷9=5
B．y+8
C．x+8＜15
D．4y=2
Before the war broke out, many people ______in safe places possessions they could not take with them.
A．throw away
B．put away
C．gave away
D．carried away
