问题
选择题
某酒精厂由于管理不善，酒精滴漏到某种化学品上而酿成火灾。该化学品可能是 [ ]
A KMnO4
B NaCl
C (NH4)2SO4
D CH3COOH
答案
答案：A
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某酒精厂由于管理不善，酒精滴漏到某种化学品上而酿成火灾。该化学品可能是 [ ]
A KMnO4
B NaCl
C (NH4)2SO4
D CH3COOH
答案：A
从下面方框中选择适当的选项补全对话，其中有两项是多余的。 A：What were you doing yesterday afternoon? B： 小题1: A：Where did you fly the kites? B：小题2: A lot of children were flying kites there. A： 小题3: B：Yes, but the wind wasn’t strong. The weather was good for flying a kite. A：小题4: B：Li Lei and Chen Yang. They both bought two new kites and got there earlier than I did. A：小题5: B：Yes, we played there for about three hours.
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