题目内容
—Thousands of teenagers lost their lives in the Yellow River every year.
—What a pity! Teenagers shouldn't swim in rivers. They must take the rule ____________.
A.quickly B.clearly C.carefully D.seriously
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题目内容
—Thousands of teenagers lost their lives in the Yellow River every year.
—What a pity! Teenagers shouldn't swim in rivers. They must take the rule ____________.
A.quickly B.clearly C.carefully D.seriously