试题与答案

下列关于生长曲线的叙述哪项不正确()。 A.生长曲线是以时间为横坐标,培养物中的细菌

题型:单项选择题

题目:

下列关于生长曲线的叙述哪项不正确()。

A.生长曲线是以时间为横坐标,培养物中的细菌数的对数为纵坐标,绘制而成的一条曲线

B.生长曲线可分为4期,即迟缓期、对数期、稳定期及衰亡期

C.生长曲线对研究工作及生产实践有指导意义

D.典型生长曲线可根据细菌在体内的生长特点而绘制

E.细菌在体内的生长曲线与其在培养基中的生长曲线有差异

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D

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题型:填空题

阅读短文,根据短文内容和所给单词填空。

                  hungry     them     unti    lidea     eat     same     only     told

  Dick and Mike, both eleven years old, went out one morning to sell cakes. Dick's mother had 1.___Dick,"Now, take these twelve cakes and sell 2.___ five cents(分)each. Don't 3.___any of them and don't give them to your friends."

  Mike's mother had said the 4.___thing to Mike. But two hours later, Mike

had sold 5.___one cake, and he was getting hungry. Suddenly he had an 6.___.

He could use the money to buy one of Dick's cakes.Dick was just as 7.___as

Mike. He at once used the same money to buy one of Mike's cakes. And that was

how it went for the rest (剩余部分)of the morning 8.___all the cakes were gone.

1.________ 2.________ 3. ________ 4. ________

5. ________6. ________7. ________ 8. ________

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