一般来说，一天中，上午、中午和下午空气污染很轻，空气比较干净；早晨、傍晚和晚上空气污染比较严重。
参考答案：对
－What would you like for your birthday ? What about an MP5?
－Oh, to tell the truth, I ______ have an I-Pad than an MP5.
A．prefer
B．prefer to
C．had better
D．would rather
A．I有=3/2A，Im=3A
B．I有=3A，I有=3A
C．I有= A，I有 A
D．I有3A，Im=6A
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