题目内容

Water,________seems so simple and common, is___________makes life_________.

A. that; that; possible                          B. which; that; impossible           

C. which; what; possible                             D. what; which; possible

C

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It is easier to float in the ocean than it is to float in a swimming pool. Do you know why?
Ocean water is full of salt— and salt water can hold up more weigh than fresh water. See for yourself!
You Will Need:
● 3 cups of warm water
● Measuring cup (量杯)
● Wide-mouthed jar
● Salt
● Spoon
● Raw (生的)potato
You Will Do:
1. Pour 1.5 cups of warm water into the jar.
2. Add 1/3 cup of salt.
3. Stir(搅拌) until the salt is completely dissolved.
4. Add another 1.5 cups of water. Pour it slowly over the back of the spoon into the jar so that the two liquid will not mix together.
5. Gently place the potato into the jar. Do not drop it.
What Will Happen:
The potato will sink— but only halfway!
Why?
Salt water is heavier than fresh water, so it will stay on the bottom. The fresh water will remain on top.
The potato is heavier than the fresh water, but it is lighter than the salt water. That is why the potato will sink halfway down.
【小题1】In the experiment, what should you do right after you pour the water over the spoon?

A．Add the salt to the water.B．Stir the salt into the water.
C．Place the potato in the jar.D．Pour warm water into thejar.
【小题2】In Step 4 of the experiment, why do you pour the water over the spoon “slowly”?
A．It is easier to see what you are doing.
B．It pushes the fresh water to the bottom.
C．It will keep the water from coming out.
D．It will keep the liquids from mixing together.
【小题3】In which step of the experiment do you add the salt?
A．Step 1B．Step 2C．Step 3D．Step 4
【小题4】What does the underlined word “gently” mean?
A．CarefullyB．QuicklyC．SecretlyD．Silently

I can’t swim because I have a strong fear of water. Look back on my childhood experience, I think three reason might explain the fear. The first reason is that I was not allowed to walking near the water when I was a child, for my mother had unreasonable fear of it. So , even as a child, when I was taught to see the water as something danger. Second, my eyes became bad when I was five . If only I took off my glasses in the water, I could not see anything, but this increased my fear. The worst part of your experience is that as a child once, I see a neighbor drown. Since then I have been more frightened.

In 1982, Steven Callahan was crossing the Atlantic alone in his sailboat when it struck something and sank．He got into a life boat, but his supplies were   21 ．His chances of surviving were small．  22   when three fishermen found him 76 days later, he was alive —much   23   than he was when he started, but alive．

His   24   of how he survived is fascinating．His cleverness —how he   25   to catch fish, how he evaporated（蒸发） sea water to   26   fresh water—is very interesting．

But the thing that   27   my eye was how he managed to keep himself going when all hope seemed lost, and there seemed no   28   in continuing the struggle．He was starved and 29   worn-out．Giving up would have seemed the only possible choice．

When people   30   these kinds of circumstances, they do something with their minds that gives them the courage to keep going．Many people in   31   desperate circumstances 32    in or go mad．Something the survivors do with their thoughts helps them find the courage to carry on   33   difficulties．

"I tell myself I can     34     it, “wrote Callahan in his book. -Compared to what others have been through, I'm fortunate. I tell myself these things over and over,       35     up courage...

I wrote that down after I read it. It   36   me as something important. And I've told myself the same thing when my own goals seemed     37 off or when my problems seemed too terrible. And every time I've said it, I have always come back to my   38     .

The truth is,our circumstances are only bad   39  to something better. But others have been through the much worse; that is, in comparison with what others have been through,you’re fortunate. Tell this to yourself over and over again, and it will help you   40   through the rough

situations with a little more courage.

1.A．full                  B．rich                        C．few                    D．enough

2.A．And                 B．Yet              C．Still                  D．Thus

3.A．thinner             B．stronger               C．worse            D．healthier

4.A．attitude            B．assumption             C．instruction             D．account

5.A．assisted    B．tended           C．managed               D．intended

6.A．make                B．absorb                 C．select                 D．replace

7.A．attacked            B．caught                 C．froze                   D．cheated

8.A．operation           B．taste                       C．message          D．point

9.A．firmly               B．completely       C．hardly           D．generally

10.A．deal                       B．defend                C．survive                 D．observe

11.A．similarly   B．differently                 C．gradually               D．commonly

12.A．pull               B．take                   C．break                   D．give

13.A．for the lack of   B．in the face of   C．in exchange for   D．as a result of

14.A．handle            B．carry          C．follow                  D．inspect

15.A．rolling             B．using                         C．building                 D．making

16.A．defeated                  B．recommended        C．introduced             D．struck

17.A．far          B．long              C．ever             D．even

18.A．feelings           B．senses                   C．ideas            D．influences

19.A．related            B．measured             C．contributed                   D．compared

20.A．see                  B．cut                C．get                D．think

 

It is easier to float in the ocean than it is to float in a swimming pool. Do you know why?

Ocean water is full of salt— and salt water can hold up more weigh than fresh water. See for yourself!

You Will Need:

● 3 cups of warm water

● Measuring cup (量杯)

● Wide-mouthed jar

● Salt

● Spoon

● Raw (生的)potato

You Will Do:

1. Pour 1.5 cups of warm water into the jar.

2. Add 1/3 cup of salt.

3. Stir(搅拌) until the salt is completely dissolved.

4. Add another 1.5 cups of water. Pour it slowly over the back of the spoon into the jar so that the two liquid will not mix together.

5. Gently place the potato into the jar. Do not drop it.

What Will Happen:

The potato will sink— but only halfway!

Why?

Salt water is heavier than fresh water, so it will stay on the bottom. The fresh water will remain on top.

The potato is heavier than the fresh water, but it is lighter than the salt water. That is why the potato will sink halfway down.

1.In the experiment, what should you do right after you pour the water over the spoon?

A．Add the salt to the water.                 B．Stir the salt into the water.

C．Place the potato in the jar.                 D．Pour warm water into thejar.

2.In Step 4 of the experiment, why do you pour the water over the spoon “slowly”?

A．It is easier to see what you are doing.

B．It pushes the fresh water to the bottom.

C．It will keep the water from coming out.

D．It will keep the liquids from mixing together.

3.In which step of the experiment do you add the salt?

A．Step 1            B．Step 2            C．Step 3            D．Step 4

4.What does the underlined word “gently” mean?

A．Carefully          B．Quickly           C．Secretly           D．Silently

 

It is easier to float in the ocean than it is to float in a swimming pool. Do you know why?
Ocean water is full of salt— and salt water can hold up more weigh than fresh water. See for yourself!
You Will Need:
● 3 cups of warm water
● Measuring cup (量杯)
● Wide-mouthed jar
● Salt
● Spoon
● Raw (生的)potato
You Will Do:
1. Pour 1.5 cups of warm water into the jar.
2. Add 1/3 cup of salt.
3. Stir(搅拌) until the salt is completely dissolved.
4. Add another 1.5 cups of water. Pour it slowly over the back of the spoon into the jar so that the two liquid will not mix together.
5. Gently place the potato into the jar. Do not drop it.
What Will Happen:
The potato will sink— but only halfway!
Why?
Salt water is heavier than fresh water, so it will stay on the bottom. The fresh water will remain on top.
The potato is heavier than the fresh water, but it is lighter than the salt water. That is why the potato will sink halfway down


1.In the experiment, what should you do right after you pour the water over the spoon?


  1. A.
    Add the salt to the water
  2. B.
    Stir the salt into the water
  3. C.
    Place the potato in the jar
  4. D.
    Pour warm water into thejar

2.In Step 4 of the experiment, why do you pour the water over the spoon “slowly”?


  1. A.
    It is easier to see what you are doing
  2. B.
    It pushes the fresh water to the bottom
  3. C.
    It will keep the water from coming out
  4. D.
    It will keep the liquids from mixing together

3.In which step of the experiment do you add the salt?


  1. A.
    Step 1
  2. B.
    Step 2
  3. C.
    Step 3
  4. D.
    Step 4

4.What does the underlined word “gently” mean?


  1. A.
    Carefully
  2. B.
    Quickly
  3. C.
    Secretly
  4. D.
    Silently

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