（1）根据氢气、一氧化碳、二氧化碳和甲烷四种气体的性质，试在以下的用途中各选填一

“Mr. Mott often forgets important meetings. The robot will go after him all the time. It listens to everything he says. It sees everything he does. At night, it watches him sleep. It knows everything about Mr. Mott…”
It sounds like a wonderful idea, doesn’t it? But I’m afraid that Mr. Mott will not get on well with the robot, because everyone has something he doesn’t want others know. It is privacy. Just imagine that there is a video camera around you all day. How do you feel? When you are taking an exam, a teacher sits in front of you and watches you all the time. How do you feel?
Mr. Mott doesn’t lose all his memory. At least he remembers that he always forgets. So why can’t he do something for this HIMSELF? He can keep a notebook with him, like most people do. In the notebook he can write down the things he should do, the persons he should meet and the places he should go. Isn’t the notebook much cheaper and safer than the robot?
小题1:“It” in the first paragraph(段落) refers to______________.

A．Mr. Mott

B．Mrs. Mott

C．the robot

D．a video camera

小题2:Why does the writer think Mr. Mott will not always get on well with the robot?

A．Because it is invented by others.	B．Because it can talk with Mr. Mott.
C．Because it can remind(提示；提醒) Mr. Mott of something he forgets.
D．Because it knows something Mr. Mott doesn’t want others know.

小题3:The underlined word “privacy” means _______________in Chinese.

A．提供

B．丧失

C．特权

D．隐私

小题4:Mr. Mott is_____________.

A．handsome

B．forgetful

C．a scientist

D．kind and friendly

小题5:From this passage we know that the writer__________________.

A．doesn’t like the robot to follow Mr.Mott all day.

B．thinks it is a good idea to have a robot like Mr Mott’s.

C．If we always forget something important,we should have a robot.

D．A notebook is cheaper than a robot but a robot is better than a notebook.