户外电缆沟内的隔断采用防火墙，对于阻燃电缆在电缆沟每隔150m设置一个隔断。

阅读理解。

    When Ben Franklin was only a child, he always wanted to know about things. He was asking his father

and brothers "what" and "why".

    They couldn't always tell him what he wanted to know. When they couldn't tell him, Ben tried to find

out for himself.

    Many years Ben did find out things that no one knew before. The other boys would say, "That Ben

Franklin! He is always finding out something new."

    Ben lived close to the water. He liked to go there to see the boats. He saw how the wind blew them

across the water.

    One day Ben said to himself, "Why can't the wind help me float across the water? And I am going to try."

Ben got his big kite. He took hold of the kite string and ran with it. The wind took the kite up into the air.

Then Ben jumped into the water. The wind blew the kite high into the air. Ben began to float across the

water. Soon he was on the other side, and he had not worked at all.

    One boy shouted, "Look at Ben floating across the water! His kite takes him to the other side without

work!"

    "Yes," said another, "he is always finding new ways to do things."

1. When he was only a boy, Ben            . [ ]

A. liked to fly a kite by himself

B. always asked long questions

C. always liked to play with water

D. always liked to find out how things worked

2. Ben Franklin floated across the water by             taking him across it. [ ]

A. another boy

B. the water

C. the flying kite

D. a boat

3. He found out many things that            . [ ]

A. children didn't know

B. his father and brothers knew

C. people didn't know

D. most people knew

4. The underlined sentence "he had not worked at all" in the passage means            . [ ]

A. he worked hard to cross the water

B. he didn't go to work that day

C. he didn't cross the water at all

D. he crossed the water in an easy way

报载一辆满载浓硫酸的槽罐车在路上因车祸翻倒，浓硫酸大量泄漏，为了不污染旁边的水源，下列采取的措施适宜的是（　　）

A．用水冲洗泄漏的浓硫酸

B．将熟石灰撒在泄漏出的浓硫酸上

C．将氯化钡撒在泄漏出的浓硫酸上

D．用土将泄漏的浓硫酸掩埋

以下关于纳洛酮的叙述，正确的是()

A．为吗啡受体拮抗剂

B．可治疗麻醉性镇痛药急性中毒

C．可治疗安眠药中毒

D．可治疗酒精中毒

E．可治疗毒鼠强中毒

真菌类

新闻评论从（）看，一般分为开头、中间、结尾。

A.自然结构

B.逻辑论证结构

C.内容发展结构

D.语法结构