问题
单项选择题
下面哪种方法正在国际上普遍用来治理废水污染( )。
A．混凝法
B．填埋法
C．超滤法
D．生物治理法
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
下面哪种方法正在国际上普遍用来治理废水污染( )。
A．混凝法
B．填埋法
C．超滤法
D．生物治理法
参考答案：D
It was the first week of the summer vacation. Dad said to Mike, “Charlie hurt his foot and can’t for two weeks. Can you work with on the boat?” Charlie was Dad’s helper. Mum said, “We know you had plans with your friends, but Dad really needs your .” “Sure, Dad, I would love to,” Mike replied. Dad and Mike left early the next morning. “Fishing is a(n) job,” Mike thought. But he kept working. When he found they were more and more crabs (蟹), Mike was so excited. It was late afternoon when they returned home. Mum had dinner ready for them, but Mike was so tired that he went straight to bed. The next morning Mike’s arms hurt a lot. , he had such a good time with Dad that he decided to keep helping him. The week(s) passed soon. Charlie came back to work. Mike enjoyed being out on the , so he asked, “May I come too?” Dad looked surprised and said, “Sure!” They all jumped the boat and set off to the ocean. The rest of the summer would be great for the three of them.
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