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【单选题】
以下哪项不属于生活污水的特点?A.
含致病菌
B.
成分不稳定
C.
颜色较深
D.
微呈碱性
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反馈参考答案：
举一反三
【简答题】对外存对换区的管理应以 1 为主要目标,对外存文件区的管理应以 2 为主要目标。
【单选题】--Who is the person talking with you just now? -- Well, if you ______ know, his name is David.
A.
may
B.
can
C.
must
D.
shall
【单选题】Since David ________ downloaded a virus into his computer，he can not open the file now． [ ]
A.
readily
B.
accidentally
C.
horribly
D.
irregularly
【简答题】香槟酒开瓶要领:( )、( )、( )、( )、( )。
【简答题】读对话，选择最佳答案回答问题。 Characters:Queen(Q)(王后) The Mirror(M)(镜子) Storyteller:Let me tell you a story of a beautiful girl.Snow White.She is very pretty.Her mother,the Queen loved her very much.Everybody love...
【单选题】David was a very cute boy but now he seems to have no interest in anything．
A.
clever
B.
honest
C.
brave
D.
dull
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