金属铁、锌、铝及其合金在磷酸盐溶液中进行处理而形成的一层转化膜是（）。
A.氧化膜
B.磷化膜
C.钝化膜
D.着色膜
参考答案：B
改写句子 按照括号中的要求完成改写后的句子，每个空格填一个单词。（5分）
小题1:Did he break the window yesterday? (改被动语态)
__________ the window __________ by him yesterday?
小题2:“How long will you be there?” she asked. (改为间接引语)
She asked me how long __________ __________ be there.
小题3:He will succeed in his scientific research. I’m sure.（合并为一句）
I’m sure __________ his __________ in his scientific research.
小题4:Jim won the first prize in the competition three years ago.（划线提问）
When __________ Jim __________ the first prize in the competition?
小题5:Hurry up, or you’ll miss the bus. (同义句)
__________ you __________ hurry up, you’ll miss the bus.
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