4．加油站必须张贴的安全标志是　　　　　　　　　　　　　　　　　　　　　

A　　　　　　　 B　　　　　　　 　C　　　　　　　　　 D

3．氮化硅(Si₃N₄)是一种新型陶瓷材料的主要成分，能承受高温，可用于制造业、航天工业等。氮化硅属于

A．合成材料　　　 B．非金属单质　　　 C．化合物　　　 D．复合材料

2．下列各组物质都属于纯净物的是　　　　　　　　　　　　　

A．金刚石、干冰　 B．煤、石油 　　C．硬水、软水　 D．大理石、天然气

1．下列造成空气污染的物质主要不是由化学反应产生的是　　　　　　　　 　　　

A．焚烧垃圾产生的大量烟尘　　　　　　　　 B．建筑施工时飞扬起的灰尘

C．燃放烟花爆竹产生的气体　　　　　　　 　 D．机动车行驶时排放的尾气

第二节　　 开放作文 (15分)gaokao/beijing

One possible version:

In the picture, between two closely-lcated buildings grows a big tree. Unlike most trees, this one bends in the middle , struggling all the way up to get more sunshine. The picture reminds me of those who secceed in unfavorable conditions. Faced with difficulties, they never give up but try their best to find a way out. Life can be hard. But if we have the courage and determination, we will finally get the sunshine we want as the tree in the pictrue does.

第一节　　 (情景作文(20分)gaokao/beijing

　One possible version:

　　　 Lst weekend, I helped my grandparents prepare their trip to Beidaihe. On Saturday morning, together with my grandparents, I seached the Internet for the train schedule, the weather in Beidaile, and some hotel information. In the afternoon, I went to the train station and managed to buy two tickets for my grandparents although there was a long queue. After dinner, I packed into the suitcase the things my grandparents reed, such as clothes, glasses, an unbrella, and a map. The next morning, I went to the station to see them off. Waving goodbye to them on the platform, I felt happy for them and wished them a safe jouney.

第二节 完形填空 (共20小题：每小题1.5分，共30分)

36-40：BACDA　 41-45：DCBDD　　 46-50：ACBCA　　 51-55：BBDAC

第一节 单项填空 (工5小题：每小题1分，共15分)

21-25：AABDA　　 26-30：DBACD　　 31-35：CBBDC gaokao/beijing