已知：，右图表示一定质量的和固体混合物受热过程中，某变量随时-优题课

1．

We live on the earth. We use the sea around us. What do we take from the ocean? And what do we give to it?
We take fishes from the ocean-millions of kilograms of fish, every year, to feed millions of people. We take minerals(矿物) from the ocean. We can get salt by evaporating(蒸发) seawater. Many other minerals, such as gold, can be also got from the sea, but not by simple evaporation. Seaweed(海草) becomes food of many kinds- even candy, and ice cream-as well as medicine. Believe it or not, fresh water is another gift from the sea. We can't drink ocean water. But ocean water becomes fresh water when the salts are removed. In the future, we will find ourselves depending more and more on fresh water from the sea.
The sea gives us food, fertilizer, minerals, water and other gifts. What do we give the sea? We pollute the ocean all the time. 　　Throwing waste into the ocean is killing off sea life. Yet as the world population grows, we may need the sea and its gifts more than ever.
We are finally learning that if we destroy our sea, we might also destroy ourselves. Hopefully, it is not too late.
根据以上内容，从下列五个选项中选择适当的句子还原到短文中，使短文完整与正确。将其标号在答题卡上涂黑。（每小题2分，共10分）

A．Other gifts from the sea , such as seaweed, can be also got from the sea.

B．Huge as it is, the ocean can't hold all that we pour into it.

C．Along with salt, other minerals are left after evaporation.

D．We even use their bones(骨头) for fertilizer(化肥).

E. Some of its contents(所含物) may cause illness.

	President Hu Jintao flew to the earthquake-hit region in Yushu, Qinghai on April 18, 2010. At a field hospital on the grounds of a sports stadium, Hu sat on the bed of Drolma, a middle school student, and held her in his arm as she wept(哭泣). "Rest assured(放心的), you will have a full recovery(康复). Be strong. You will have a bright future," he told her.
The 2010 World Expo, Shanghai China	The 2010 World Expo Shanghai China Duration(举办时间): May 1 to October 31, 2010 Expected visitors: 70 million Theme(主题) : "Better City, Better Life." The theme represents the common wish of the people all over the world for a better living in future urban(城市的) environments.
	The 19^th FIFA World Cup(世界杯足球赛) Duration: June 11 to July 12, 2010 Host(主办) nation: South Africa Number of teams: Thirty-two Number of matches: Sixty-four It is the first time that the tournament(锦标赛) has been hosted by a nation in the Confederation(联盟) of African Football.

President Hu Jintao flew to Yushu, Qinghai _________, 2010.

A．

on May 1

B．

on June 11

C．

on April 18

D．

on July 12

President Hu Jintao comforted(安慰) _________ at a field hospital.

A．	a middle school student	B．	a soldier
C．	a farmer of Yushu	D．	a doctor

The 2010 World Expo in Shanghai will end on _________.

A．

September 30

B．

October 31

C．

November 30

D．

December 31

The theme of Expo 2010 is "_________"

A．	Better City, Bright future.	B．	Better City, Good Environment.
C．	Better City, Better Life.	D．	Better City, Best Investment(投资).

There will be _________ teams taking part in the 19^th FIFA World Cup.

A．

10

B．

12

C．

13

D．

32

Mr Brown saw a sweater in a shop window. It was very cheap, so he bought it. When he got home, he put it on. It was all right and he was pleased with it.
In the afternoon, he went to work in his garden. It soon began to rain and Mr Brown had to run into the house. He ran quickly, but he still got wet. Then his sweater started to shrink(收缩)! It got smaller and smaller. Mr Brown tried to take it off, but he couldn't.
In the end, with the help of his wife, he got out of the sweater. Mrs Brown laughed, "You see, you bought a cheap thing, but…"
Mr Brown saw a nicein a shop window. And he bought it.

A．

jacket

B．

coat

C．

sweater

D．

shirt

When he, he put it on.

1．

A．

got to the office

B．

got home

C．

went to work

D．

went to the shop It soon began to_________ while he was working in the garden.

A．

rain

B．

snow

C．

cloud

D．

shine

Mr Brown got wet and he tried tothe sweater.

A．

take away

B．

take off

C．

put up

D．

put on

From the story, we know Mr Brown bought.

A．	a good sweater	B．	an expensive sweater
C．	a comfortable sweater	D．	a cheap but not good sweater

请阅读下面短文，选择最佳答案，将其标号在答题卡上涂黑。
Smiling is the best way of making friends.
When I was thirteen 46 old, my father found a job in the city. So my family moved there. I also came to a 47 school near where we live. My old school was far away. At first, I did not know anyone in my class. I was very lonely 48 I was afraid to make friends with my classmates. I 49 talk to anyone about my problem, and I didn't want my parents to 50 me.
Then one day, something good happened. I was sitting at my desk 51 as usual while my classmates were talking happily with each other. At that moment, 52 came into the classroom. I didn't know who he was. He passed me and then turned back. He looked 53 me and, without a word, smiled. Suddenly, I felt happy, lively and warm. That smile changed my life. I started to talk with the other classmates and made friends. Day by day, I became 54 to everyone in my class.
55 the smile, I have moved on to a new life. Now, I believe that the world is what you think it is. So smile at the world and it will smile back.

1
A．days	B．weeks	C．months	D．years

2
A．old	B．new	C．same	D．easy

3
A．because	B．before	C．after	D．if

4
A．couldn't	B．mustn't	C．needn't	D．won't

5
A．talk to	B．look after	C．worry about	D．ask for

6
A．early	B．unhappily	C．quickly	D．wonderfully

7
A．a girl	B．a boy	C．some girls	D．some boys

8
A．of	B．on	C．at	D．into

9
A．closer	B．older	C．cooler	D．colder

10
A．Instead of	B．Look forward to	C．Pay attention to	D．Thanks to

This is my beautiful school is near the famous library.

A．

where

B．

which

C．

who

D．

when

A．固体中氧元素的质量	B．生成的质量
C．固体中的质量	D．固体中钾元素的质量分数