牙石中最主要的成分是( )

A．水
B．细菌
C．食物残渣
D．无机盐
E．致病微生物

第二节：读写任务（共1小题，满分25分）

阅读下面的短文，然后按照要求写一篇150词左右的英语短文。

One morning, M. Hare was running on the road. Suddenly he saw Mr. Tortoise, who was also running on the road towards him. Mr. Hare an up to Mr. Tortoise and laughed at him. Mr. Tortoise got angry and wouldn’t take failure lying down, so he suggested having a ace to see who could first get to the big tall tree by the roadsides. Mr. Hare agreed with him without hesitation. The race began. Mr. Hare and Mr. Tortoise stated from the same line at the same time. When Mr. Hare was far ahead couldn’t catch up with him. So he stopped and lay down to have a nap. But soon he feel sleep. At the same time. Mr. Tortoise kept on running. When Mr. Hare woke up, he found Mr. Tortoise had already sat under the tree and was smiling at him.

[写作内容]

1．以约30个词概括本文的主要内容；

2．然后以约120个字写一篇记叙文，描写你或你的朋友骄傲而落后的一次经历，并包括以下要点。

A．谈谈这则故事经人的启示；

B．叙述你的朋友因骄傲而落后的一次真实或虚构的经历

C．谈谈这次经历对你或你的朋友思想态度的影响

[写作要求]

1．可以参照阅读材料的篇章结构组织故事，但不得引用原文中的句子；

2．文中不能出现真实姓名和学校名称。

____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________