问题 单项选择题

猩红热特征性病变是由哪种物质引起的()。

A.溶血素

B.M蛋白

C.链激酶

D.红疹毒素

E.透明质酸酶

答案

参考答案:D

解析:猩红热的特征性病变是由红疹毒素引起。

写作题

假设你是李响,准备参加学校举办的主题为“健康成长”的英语作文比赛。请按要求写一篇短文,主要内容包括:

乐观的人生态度;

参加体育锻炼;

健康的饮食习惯。

注意: 1. 词数 100 左右;

2. 可适当增加细节;

3. 开头已为你写好。

We all want to grow up happily and healthily, and for this goal we must do several things.

                                                                                       

                                                                                       

                                                                                     

                                                                                       

                                                                                       

                                                                                       

                                                                                       

                                                                                       

                                                                                       

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