liquid

expand

contract

substance

mixture

oxygen

electricity

stage

conclusion

aim

reaction

electrical

equipment

react

potassium

sodium

calcium

magnesium

aluminium

zink

partial

copper

oxide

rust

boil

ordinary

steam

float

form

dissolve

balance

crucible

tongs

flame

facility

lecture

department

astonished

得出结论

瞄准

沸腾的水

许多设备

作为固体存在

加热金属

draw a conclusion

aim at sth.

boiling water many facilitiesmuch equipment

exist as a solid

heat a metal

－的一种混合物

电力设备

与－－起反应

按顺序进行排列

在顶部

在底部

a mixture of

electrical equipment

react with

put sth. in order

at the top

at the bottom

从－中学习

往－－里加－－

过去常常

最新的设备

一学期四次

在－－的领域

learn from

add… to…

used to do sth.

the latest equipment

four times a term

in the area of

作出真正的发现

一流的科学家

在过去的 20 年里

为－感到骄傲

应当；理应

或者－或者

make real discoveries

first– class scientist

in the last 20 years

be proud of

be supposed to

either … or

According to the text, fill in the blanks.

Different metals have different___. When

we use metals,it is __ to know they___with

different ___. The reaction of metals with these substances can be put in ___. From the ___,we can find potassium reacts___ with oxygen and water while ___doesn’t react with water. When we ___calcium in oxygen, it burns to ___an oxide.

usesimportant

how

react

substances

order

table mostcopper

heatform

∨

as

1. adv. 同样，一样 Tom runs fast, but I run just as fast.

2. conj.

① 当－－－时 I read the letter as I walked along the river.

② 由于；鉴于As he wasn’t ready in time, we went without him.

③ 像－－一样She doesn’t sing as (so) well as her sister.

④ 按照；如同I have changed it as you suggested.

Do as I do.⑤ 虽然，尽管Tired as they were, they walked on.3. prep. 作为；如同He worked as a teacher.Why is he dressed as a woman.

4. pron. Such … as \ the same …as

I never heard such stories as he told.

My hometown is no longer the same as it was. as is well known

as for 至于；就－－而言

As for me, I have nothing to complain of.

as if = as thoughI remember the whole thing, as if it

happened yesterday

Correct the mistakes:

1.The income of his family is two times that of hers.

2. Life today is much better than it in the past.

3. Electrical lamps are now used to give us light at night.

4.Our react to a joke is to laugh.

____________

twice

\ that

__________

electric

_____ reaction

5.A lot of equipment have been brought in from Japan.

6. The building to be built last year is a hospital.

7. I thought my past days when I saw the old photos.

8.I’d like to buy the same bicycle that you have.

9.It’s sure the earth is round.

\

has

\ \

ˇ of

\ as

\certain

10.There used to have a lot of wild animals

living here.

11.It’s six o’clock now. He is suppose to be at home.

12.Does Mr. Smith get used to live in the countryside.

13.In the past few years, a lot of new buildings had been built.

_____

be

_________

supposed

____living

____have

Choose the best answers.

1.------Are you feeling ___?

------yes, I’m fine now.

A. any well B. any better

C. quite good D. quite better

B

2.___ is a good habit to put everything ___

order after an experiment.

A. This ;in B. It; in C. That; with D. It;with

B

3.Gold is ___most valuable of all metals.

A. the much B. very C. far D. by the far4.This car is ___cheaper than the one they bought last year.

A. more B. less C. no D. very

D

C

4.How wonderful she sings! I have never heard____.

A.the better voice B. a good voice

C. the best voice D. a better voice5.___the temperature is, ___water turns

into steam.

A.The higher; the fast B. Higher; faster

C. The more higher; the faster

D. The higher; the faster

D

D

6.As time went on, he became___.

A. more impatient and more impatient

B. more and more impatient

C. more and more impatiently

D. impatienter and impatienter7. Canada is larger than___ country in Asia.

A. Any B. any other C. other D. another

B

A