易燃固体的燃烧产物毒性较小的是()。
(A)红磷
(B)硝基甲苯
(C)生松香
(D)二硝基苯
参考答案:C
One thousand people died in the disaster, two hundred and fifty-five children ____.
A.were included
B.including
C.include
D.included
地下水中含有各种()、()、()、()以及微生物等。