摘要：( ) Travelling by air may be ,but not so A. quicker, cheaper B. more quickly, cheap C. quicker, cheap D. more quickly, cheaper
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Travelling by air may be ________ , but not so ________ .
[
]|
A ．quicker; cheaper |
B ．more quickly; cheap |
|
C ．quicker; cheap |
D ．more quickly; cheaper |