下列实例中,目的是为了减小摩擦的是 [ ]
A.足球守门员戴有防滑手套
B.骑自行车的人刹车时用力捏闸
C.给自行车轴承中加润滑油
D.运动鞋的底部制有凹凸不平的花纹
答案:C
阅读下列内容,从每小题所给的四个选项中选出一个最佳答案。
小题1:Mr.Smith wants to go to Blue Water World with his family, so they can go there ?
A.at 5:00 p. m on Monday
B.at 10:00 a. m on Tuesday
C.at 2:00 p. m on Sunday
D.at 11:00 a. m on Monday小题2:Mr. Liu wants to go to Blue Water World with his eight-year-old twin sons this Saturday. How much will they have to spend?
A.¥40
B.¥120
C.¥80
D.¥20小题3:If you want to have a hot spring bath, you can call .
A.555-5685
B.555-5686
C.555-5684
D.555-5681
以下哪种不是MobileMarket现有的推荐方式?