汽车有未燃烧的汽油味（俗称生油味），其原因是（）。
A.汽油滤清器过脏
B.混合气过稀
C.供油系统出现渗漏
参考答案：C
用所给代词的适当形式填空。
1. Do tell your friends about our hotel. Any friend of ______ (you) is welcome here.
2.—Are these _____ (you) pencils?
—Yes , they are _____ (our) .
3. Drive carefully, or you will hurt _____ (you ) .
4. All parents love their children, and my parents love ______ (they), too.
5. The pen is ______ (she). She wrote ______ (she) name with it by ______ (she) .
由于近年来媒体数量激增，汽车消费人群被进一步细分，媒体选择也就容易了，降低了媒体广告的费用。( )
