问题 单项选择题 A1/A2型题

最常用的半抗原载体为()

A.牛血清白蛋白

B.牛甲状腺球蛋白

C.人血清白蛋白

D.人甲状腺球蛋白

E.球蛋白

答案

参考答案:A

解析:最常用的半抗原载体为BSA。

单项选择题
写作题

假设你叫李华。你校原外籍教师Mrs.Smith曾经在外语学习上给过你很多的帮助。上周她从澳大利亚来信,询问你高考英语的复习情况。最近你在外语考试中,听力、阅读和写作进步很大,但在做完形填空时还存在一些问题。请你给Mrs.Smith写封回信,感谢她对你的帮助,说明目前学习情况,分析取得进步的原因和存在的问题,并请她提出指导意见。

注意:1. 词数110左右。

2. 信的开头和结尾已经为你写好。

3. 参考词汇:完形填空Cloze Test

Dear Mrs. Smith,

Thank you very much for your letter last week .                            

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I hope this letter will find you happy and healthy. Please remember me to your family.

Yours,

LI Hua