试题与答案

下列最适用于作军团菌培养的培养基是() A.BCYE琼脂培养基 B.庆大霉素培养基

题型:单项选择题 A1/A2型题

题目:

下列最适用于作军团菌培养的培养基是()

A.BCYE琼脂培养基

B.庆大霉素培养基

C.巧克力培养基

D.吕氏鸡蛋血清培养基

E.亚碲酸盐血琼脂

答案:

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题型:阅读理解

阅读理解。

     On a hot summer day in south Florida, a little boy decided to go for a swim in the old swimming

hole behind his house.In a hurry to dive into the cool water, he ran out of the back door, leaving behind

shoes and shirt as he went.

     He flew into the water, not realizing that as he swam toward the middle of the lake, a crocodile was

swimming toward him.His mother in the house was looking out of the window and saw the two. In great

fear, she ran toward the water,shouting to her son as loudly as she could. Hearing her voice, the little boy

became alarmed and made a U-turn to swim to his mother. It was too late. Just as he reached her, the

crocodile reached him.From the shore, the mother caught her Iittle boy be the arms just as the crocodile

snatched his legs. That began an incredible tug-of-war between the two.The crocodile was much stronger

that the mother, but the mother was much too eager to let go. A farmer happened to drive by, heard their

screams, raced from his truck, took aim and shot the cmcodile.

     After several weeks in hospital,the Iittle boy survived. His legs were extremely scarred by the attack of the

animal. And, on his arms, were deep scratches where his mother's fingernails dug into his flesh in her effort

to hang on to the son she loved.

     A newspaper reporter, who interviewed the boy, asked if he would show him his scars (伤疤). The boy

Iifted his legs. And then, with obvious pride,he said to the reporter,"But look at my arms. I have great scars

on my arms, too. I have them because my Mom wouldn't let go."

     Never judge another person's scars, because you don't know how they were made.

1. What is probably the best title for the passage?

A. Scars of love

B. Women hold up half sky

C. A terrible experience

D. Don't judge by appearances

2. Hearing Mother's shouts, the boy _______.

A. remained in the middle in great fear

B. didn't stop swimming forwards

C. swam back towards the bank

D. was ready to fight the crocodile

3. Which of the following statements is true according to the text?

A. A crocodile attacked him when the boy and his mother were bathing.

B. The crocodile bit the ams of the boy when is reached him.

C. It was the farmer who shot the crocodile.

D. There is always an interesting story behind every scar.

4. By saying "But look at my arms. I have great scars on my arms, too." in paragraph 4,

   the boy really wants to show ______.

A. how deep the scars made by the crocodile were

B. What a brave boy he was

C. how many scars and scratches he had

D. how great and beloved his mother was

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