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【多选题】
邮寄调查的优点A.
费用低
B.
调查者的影响小
C.
调查区域广泛
D.
应答更加确切
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反馈参考答案：
举一反三
【单选题】Nothing but grass and trees _______ the hill.
A.
covers
B.
cover
C.
covering
D.
are covering
【单选题】The pool of water on the playground ______ in the sun.
A.
evaporated
B.
disappeared
C.
vanished
D.
faded
【单选题】The seeds of trees, grass and flowers
A.
are brought by wind and birds to the coral islands.
B.
are brought by wind only to the coral islands.
C.
are brought by people to the coral islands.
D.
are brought by fishes to the coral islands.
【简答题】Walking down a path through some woods in Georgia, I saw a small pool of water ahead on the path．I angled my direction to go around it on the part of the path that wasn't covered by water or mud．As I ...
【简答题】阅读理解。 Walking down a path through some woods in Georgia, I saw a small pool of water ahead on the path. I angled my direction to go around it on the part of the path that wasn't covered by water or mu...
【简答题】Walking down a path through some woods in Georgia, I saw a small pool of water ahead on the path. I angled my direction to go around it on the part of the path that wasn't covered by water or mud. As ...
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