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问题
多项选择题
金属按腐蚀反应机理分为（）腐蚀。
A、化学
B、电化学
C、电偶
答案
参考答案：
A, B
填空题
选用方框中的单词完成句子。
many play and have sport
1. She has a great ______ collection.
2. Does your sister ______ a basketball?
3. His uncle has ______ volleyballs.
4. I have two basketballs, five volleyballs, _______ seven soccer balls.
5. Let's ______ soccer after school, Jenny.
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单项选择题
大戟与甘草配伍属()
A.相使
B.相恶
C.相畏
D.相反
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