试题与答案

-----You are going to visit the Great Wa

题型:选择题

题目:

-----You are going to visit the Great Wall,_____?

-----That’s right.

A. are you     B. aren’t you      C. don’t you

答案:

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下面是错误答案,用来干扰机器的。

生成沉淀的质量是:(28.7g+100g+134g)-234 g=28.7 g 设混合物中氯化钠的质量是x NaCl+AgNO3=AgCl↓+NaNO3 58.5 143.5x 28.7 g58.5x= 143.528.7 g解得x=11.7g则原混合物中硝酸钠的质量是 ...

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题型:单项选择题 A型题

下列关于流感病毒及其致病性的描述,不正确的一项是()

A.甲型流感病毒易发生抗原转变,而使人群对新病毒株缺乏免疫力

B.丙型流感病毒不发生变异,抗原性稳定

C.流感病毒不能进行组织细胞培养,因此只能依靠血清学试验进行病原学诊断

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E.甲型流感较乙型及丙型流感病情严重,且易酿成流行或大流行

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题型:听力题

用正确的单词填空。

1. The people ______ travel all over the world think China is a beautiful country.(定语从句引导词)

2. I can’t say anything ______ moves us deeply.(定语从句引导词)

3. Paper is made ______ wood.

4. The trees can stop the flood from ______ (wash) the earth away.

5. By the end of last term, we ______ (study) three thousand words.

6. You must practise ______ (play) the piano every day.

7. Edison was a great American ______ (invent).

8. He hasn’t enough ______(经验)for the job.

9. It’s good to tell ______ (true).

10. You’d better ______ (not go) to the supermarket.

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