在教学中，李老师为了让课件在他不在场的条件下也能很好地发挥作用，一般选择交互性课件，

液压千斤顶以（）作为液压泵。

A.大活塞

B.小活塞

C.单向阀

D.杠杆

相同质量的CO₂和N₂O相比较，不一定相同的是(    )

A．分子数

B．原子数

C．体积

D．电子数

人体内最早合成IgM的时间是（）

A.胎儿发育早期

B.胎儿发育晚期

C.出生后1个月

D.出生后2个月

E.出生后3个月

36.6÷0.25转化成除数是整数的除法算式是______，这是根据______．

How the iron of tomorrow (the first Self Clean Iron)can change your lifestyle today?

General Electric introduces the iron of tomorrow. The iron can clean itself, inside where irons get dirty. Because it cleans itself each and every time you empty it.

How? With a push of a magic blue button.

The magic blue button

The first thing you’ll notice that’s different about this iron is the blue button on the side. It’s marked “Self Clean”. Push this blue button, and you can wash out loose mineral deposits that remain and block up inside. Push this button, and you’ve made life a lot easier.

Less chance of brown spots

Sure, Self Cleaning Iron is going to cut down on brown spots. (Those ugly spots that happen on nice, cleanly pressed clothes.) Because a Self Cleaning Iron becomes clean each time you press that magic blue button.

Steams much longer

Common sense tells you that if you’ve an iron that blocks less often it has to stay younger for a long period of time. In other words, it steams much longer. That’s another joy of owning General Electric’s Self Cleaning Iron.

What does it mean to you

Today you are doing so much more than just running a house and running after the kids.

You’re working. You’re going to school. It’s all part of your lifestyle. The iron can change that lifestyle. By giving you less trouble before you iron. If we can make it easier for you to be a better wife, a better mother, a better housemaker, we want to. The new Self Cleaning Iron is another one of Home-Makers from General Electric.

Lifestyle.

We’re with yours.

GENERAL ELECTRIC

小题1:This passage is ______.

A．an introduction to General Electric

B．an operating instruction of Self Cleaning Iron

C．an advertisement of Self Cleaning Iron

D．a description of the change of lifestyle小题2:This iron can clean itself by ______.

A．empting itself

B．washing out mineral deposits

C．blocking up mineral deposits

D．giving off more steam小题3:According to the passage, what is most likely to attract the customers?

A．It is made by General Electric.

B．The iron will not produce mineral deposits.

C．There will be fewer brown spots on pressed clothes.

D．Their clothes will be cleaned at the same time.小题4:Self Cleaning Iron can help change your lifestyle because ______.

A．you can run your house better

B．you don’t have to run after the kids

C．you can use it while you are working

D．we want you to be a better housemaker