题目内容
Planes will be very large ____ flying will be very cheap.
[ ]
|
A .but |
B .so |
C .or |
D .because |
答案:B
解析:
解析:
|
飞机大所以飞行便宜, so表示因果关系 |
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Planes will be very large______ flying will be very cheap.
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