在很长的下坡路程，如果使自行车匀速下坡，则骑行者的机械能将____ （选填“增大”、“减小”或“不变”）；有经验的骑行者在下坡一段距离后会停车休息，因为长时间刹车使刹车片的____ 能明显增大，容易损坏刹车片．

63＋30=____

57＋40=____

76＋20=____

67＋10=____

阅读下面几则材料，然后做题。
材料一：在肯德基餐厅的一隅，一个孩子正贪婪地啃着鸡大腿。父亲在一旁看着自己的孩子，只是充当陪客。
材料二：各大学开学的时候，一群比自己父母长得都高大的“大男孩”和“大姑娘”们像废物一样伫立在一边，而他们的父母却气喘吁吁地为其办理着各种入学手续。
材料三：日本电影《狐狸的故事》：当小狐狸还娇滴滴地在老狐狸身边撒娇的时候，身为父母的老狐狸却无情地把它们从家中赶走。那些被老狐狸咬伤并赶走的小狐狸眼中充满着忧伤和委屈，然而老狐狸则义无反顾，坚决果断。

给下列句子编号。

Kate:  Look, Mary! A girl is over there. Can you see her?

Mary:  Which girl?

Kate:  The one in the red coat under the apple tree. Do you know her?

Mary:  That's Lily. Lily, how are you?

Lily:   Very well, thank you, and you?

Mary:  I'm fine too. This is my friend, Kate.

Lily:   Nice to meet you, Kate.

Kate:  Nice to meet you too.

A. That's Lily. Lily, how are you?

B. Which girl?

C. Look, Mary! A girl is over there. Can you see her?

D .The one in the red coat under the apple tree. Do you know her?

E. Very well, thank you, and you?

F. Nice to meet you, Kate.

G. I'm fine too. This is my friend, Kate.

H. Nice to meet you too.

____