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【简答题】
旅行社分支机构应当接受所在地的旅游行政管理部门的行业管理，在管理、财务等方面可以和设立社不一样。（ ）
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【单选题】If you have really been studying English for so long, it's about time you______ able to write letters in English.
A.
should be
B.
were
C.
must be
D.
are
【单选题】It's a good habit to have your car brakes ______ before a long journey．
A.
to check
B.
checked
C.
checking
D.
Check
【简答题】按照混凝机理铝盐混凝剂主要起___的作用,而高分子混凝剂则为___。
【简答题】You have bought a vacuum cleaner from a supermarket, but it disappointed you very much. Write a letter to Mr. Robert, the Sales Manager of the supermarket to make a complaint and ask for his help. You...
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