耗能对环境污染的主要形式有几种？

We’ll have a________ holiday. Let’s go to the beach，shall we?

A．three-day

B．three days

C．three-days

D．three-days’

两个大小不同的绝缘金属圆环如右图叠放在一起，小圆环有一半面积在大圆环内，当大圆环通上顺时针方向电流的瞬间，小圆环中感应电流的方向是(　　)

A．顺时针方向

B．逆时针方向

C．左半圆顺时针，右半圆逆时针

D．无感应电流

Hobbs was an orphan（孤儿）. He worked in a factory and every day he got a little money. Hard work made him thin and weak. He wanted to borrow a lot of money to learn to paint pictures, but he did not think he could pay off the debts.

One day a lawyer said to him, “One thousand dollars, and here is the money.” As Hobbs took the package of notes, he was very dumbfounded. He didn’t know where the money came from and how to spend it. He said to himself, “I could go to find a hotel and live like a rich man for a few days; or I give up my work in the factory and do what I’d like to do: painting pictures. I could do that for a few weeks, but what would I do after that? I should have lost my place in the factory and have no money to live on. If it were a little less money, I would buy a new coat, or a radio, or give a dinner to my friends. If it were more, I could give up the work and pay for painting pictures. But it’s too much for one and too little for the other.”

“Here is the reading of your uncle’s will（遗嘱）,” said the lawyer, “telling what is to be done with this money after his death. I must ask you to remember one point. Your uncle has said you must bring me a paper showing exactly what you did with his money, as soon as you have spent it.”

“Yes, I see. I’ll do that,” said the young man.

小题1:.. Hobbs wanted to borrow money to _______.

A．study abroad

B．work abroad

C．pay off the debts

D．learn to paint pictures小题2:. What does the underlined word “dumbfounded” （in Paragraph 2） probably mean?

A．Surprised.

B．Frightened.

C．Satisfied.

D．Excited.小题3:. With the money he got, at first Hobbs _______.

A．planned to have a happy life for a few days

B．decided to give up his work in the factory

C．was to give a dinner to his friends

D．had no idea what to do小题4:.. Hobbs was asked to _______.

A．tell the lawyer what he did with the money after spending it

B．read his uncle’s will

C．tell the lawyer what was to be done with the money

D．buy some pictures

以下对采用EPC承包模式特点的表述，正确的是( )。

A．有利于缩短建设工期
B．对总承包商而言，风险较大
C．采用简单的成本加酬金合同形式
D．信息的开放性

自动控制系统中滞后的存在对控制是不利的。