B

The world is not only hungry，it is also thirsty for water． this may seem strange to you，since nearly 75% of the earth is covered with water． But about 97% of this water is sea water．Man can only drink and use the other 3% fresh water that comes from rivers，lakes，under-ground and other places． And we cannot even use all of that，because some of this fresh water has been made dirty．

45．_________

俗话说家有家规，在家里，父母一定给你定下了不少的规矩吧。请先描述这些规矩，然后就这些规矩发表你的看法，并提出你的建议。80个单词左右。

1． Can’t go out on school nights

2． have to go to bed before 9 0’clock   

3． be not allowed to play computer games

43．_________  

44．_________ 

41．_________   

42．_________ 

40．_________

38．_________  

39．_________  

It was getting dark． Some children and two Canadian women were still skating near a big hotel． They (36) (have)a good time．

A boy said to his friends，"I (37) (not skate) on a real lake so far．It's wonderful! Look! I (38) (fly)! "Suddenly the ice．broke． One of the boys fell into the water．The children shouted，"Help! Help!"They didn-t know what they (39) (do)．

The two Canadian friends heard them and skated over to help the boy．

The ice (40) (be) thin The two Canadians fell into the water，too． But they tried their best (41)   (save) the litde boy． They knew they (42) (be) quick，or the boy would be frozen．Many guests from the hotel (43) (run) over to help． The boy and the two Canadian women were out of water at last． One of the women (44) (not feel) well． She (45) (send) to hospital at once． She felt happy because the boy was safe．

36．_________