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参考答案:
举一反三
【简答题】“Enjoyed” is too mild a word, really; I walked on air.
【单选题】Helen couldn't go to France after allThat's too badI'm sure she would have enjoyed it if
A.
she' s gone
B.
she' 11 go
C.
she' d gone
D.
she' d go
【判断题】若从一个无向图中任一顶点出发,进行一次深度优先遍历,就可以访问图中所有的顶点,则该图一定是连通的。
A.
正确
B.
错误
【多选题】分离羟基蒽醌,常用的吸附剂是
A.
硅胶
B.
活性炭
C.
氧化铝
D.
聚酰胺
E.
葡聚糖凝胶
【单选题】There were too many people in the park, _______ they still enjoyed staying there. [     ]
A.
because
B.
or
C.
but
D.
so
【单选题】---I have enjoyed the party so much, but I have to go home now, it’s too late. --- _______________
A.
Have another try.
B.
What a pity!
C.
Congratulations.
D.
It’s a pleasure.
【判断题】若从一个无向图中任一顶点出发,进行一次深度优先遍历,就可以访问图中所有的顶点,则该图一定是连通的。
A.
正确
B.
错误
【简答题】用色谱法分离游离羟基蒽醌衍生物时常用的吸附剂为( )。
【单选题】用色谱法分离游离羟基蒽醌衍生物时常用的吸附剂为()。
A.
硅胶
B.
二醇基
C.
苯基
D.
醚基
【单选题】A: I enjoyed our conversation last week.B: ().
A.
did too.
B.
Nice to see you again.
C.
Well, I am fine.
D.
That's a good idea.
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