机动车行驶中,车上少年儿童可不使用安全带。
参考答案:错
解析:机动车行驶中,车上,少年儿童要按照规定使用安全带或儿童安全座椅。
—Believe it or not, last month in America I came across the girl whose photo was in the drift bottle got three years ago .
—Really?That’s the most surprising I’ve ever heard of!
A.identification
B.coincidence
C.viewpoint
D.procedure
煤尘的()越高,爆炸性越强。
A、灰分
B、挥发分
C、水分