I can’t tell you the exact time when I will get there. ____, I’ll be there as early as I can.

A．No matter

B．Anyhow

C．Therefore

D．Besides

 

A black hole is a place in space where gravity pulls so much that even light cannot get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.

Because no light can get out, people can’t see black holes. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently from other ones.

Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or “staff”, in an object.

Another kind of black hole is called “stellar”(星球黑洞). Its mass can be up to 20 times more than the mass of the sun. There may be many stellar mass black holes in Earth’s galaxy. Earth’s galaxy is called the Milky Way.

The largest black holes are called “supermassive”(超大质量黑洞). These black holes have masses that are more than one million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy has a mass equal to about four million suns and would fit inside a very large ball that could hold a few million Earths.

Scientists think the smallest black holes formed when the universe began. Stellar black holes are made when the center of a very big star falls in upon itself, or falls apart. When this happens, it exploded part of the star into space. Scientists think supermassive black holes were made at the same time as the galaxy they are in.

A black hole can not be seen because strong gravity pulls all of the light into the middle of the black hole. But scientists can see how the strong gravity affects the stars and gas around the black hole. Scientists can study stars to find out if they are flying around, or orbiting a black hole.

When a black hole and a star are close together, high-energy light is made. This kind of light cannot be seen with human eyes. Scientists use satellites and telescopes in space to see the high-energy light.

1.The gravity of a black hole may become so strong that light cannot get out when ____________.

A. the star is going to die          

B. special tools are used on it

C. other stars come close to it      

D. it is seen from the space telescopes

2.According to the passage, which of the following is NOT true?

A. A black hole can be very tiny but extremely heavy.

B. The gravity of a black hole holds all light in its center.

C. Scientists observe high-energy light through their own eyes.

D. Some small black holes came into being as early as the universe.

3.The underlined word “galaxy” in Paragraph 5 means __________.

A. a black hole                       B. the Milky Way

C. a series of stars                    D. a planet near the earth

4.What does the last sentence in Paragraph 5 suggest?

A. Neither the sun nor the earth is as heavy as a black hole.

B. There is a supermassive black hole at the center of the Milky Way.

C. The supermassive black hole had existed before the Milky Way was formed.

D. There is a reason why the large black holes are called “supermassive”.

5.The last two paragraph mainly focus on the question of _________.

A. what a black hole is        

B. how black holes form

C. how big black holes are    

D. how scientists know about black holes

 

 

第一节 完形填空 (共10小题；每小题2分，满分20分)

    阅读下面短文，掌握其大意，然后从21—30各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。

It is so easy for us to overspend our income. Credit cards are    21    to obtain, especially when you pay your bills on time. Companies will try to make you keep    22    until you can’t keep up and then they will make your life very    23   .

You can avoid major    24    in several ways. Have a plan. Set up a budget (预算) with measurable goals and stick to it, which will save you a lot of frustration (沮丧) later. Set up a saving account that you can use only in case of    25   . Set up another account for your    26   . Do it as early as you can and don’t touch it until you retire. Decide which bills are to be paid out of each check and pay those first.

If there is anything left, you can buy groceries, go out to    27    or go to the movies. Consider setting up an account that automatically pays your bills each month so that you don’t have to do it every month. You could have a household account. Have your check deposited in the household account and don’t    28    money out of the household account if the balance falls below the account that you set    29   . In my opinion, it’s wise for you to have health    30   , which can really save you money. As we know, a broken leg can save you $20,000 or more!

21. A. eager              B. easy                        C. fast           D. hard

22. A. charging          B. working           C. studying       D. saving

23. A. colorful          B. unhappy            C. hopeful              D. energetic

24. A. arguments        B. cases             C. problems      D. negotiations

25. A. fire              B. danger                C. emergency    D. disease

26. A. promotion        B. retirement             C. family        D. development

27. A. study            B. walk            C. eat           D. rest 

28. A. take             B. drive               C. pull          D. keep

29. A. regularly         B. afterwards          C. earlier        D. finally

30. A. guard           B. insurance             C. check         D. information

 

Honestly, since my daughter was born, I have thought a lot about how to raise a child. I once heard a story that told about when a baby was born. The story said that when a baby was born, a new master was born. The parents of that baby would become the servants. The question is: Why? Based on my observation, this phenomenon is true. Most parents who don't pay much attention to their kids have difficulties with their kids' attitude.

I'll make a comparison of how two families raise their children. The first one is a family with three children. Both mother and father never say "No" to their children's demands. As a result, all of their children became stubborn and won't listen to their parents’ words, "We can't."

The second family educated their children strictly from one year old to high school. The parents never approved or agreed directly to give their children what they wanted. They always postponed one or two days, even if they could afford it. Due to the way their parents educated them, these children understood that if they wanted something, they had to wait or they had to make an effort first. As a result, all the kids from the second family successfully graduated from university on time.

In my opinion, if we want to be successful parents and raise our children well, we have to start disciplining them when they are toddlers but not wait until they become teenagers.

1.Why did the writer give two different stories in this passage?

A．To help prove his opinion about raising a child.

B．To list different ways that parents may take.

C．To criticize some parents’ foolish action.

D．To prove that his way of education is right.

2.What does the underlined word “postponed” in the third paragraph mean?

A．Carried out at once.	B．Gave up.
C．Put off.	D．Made a decision.

3.In the writer’s opinion, which of the following about raising a child is TRUE?

A．Children should be respected once they were born.

B．Parents should educate their children as early as possible.

C．It is right time to educate their children when they are teenagers.

D．Children should be helped whenever they make mistakes.

 

It is known that ________ medical examination helps people to find out health problems as early as possible.

A．normal           B．general           C．regular           D．common