题目内容
realize
| A．pyramid | B．responsibly | C．whisper | D．title |
D
解析
An Experiment
Materials: Newspaper, ‘ACE’ hardware ruler (1/8 “think”), a flat table.
Purposes: We’ll show that there is air pressure pushing on us, from every direction while we’re on this Earth.
|
less than half of it hanging off the edge of the table
(see the drawing below). Next place a sheet of newspaper
over the ruler flat against the table. Make sure to have
as little air as possible under the paper so that the fold line of the newspaper is at the ruler. Then quickly strike the end of the ruler hanging off the edge of the table. If you strike it quick enough, the ruler will break near the table edge.
What’s going on?
The Earth is covered in a layer of air that is nearly 80 miles thick and at sea level (the bottom) exerts or ‘pushes’ hard almost 15 pounds of pressure per square inch. That means that a full sheet of newspaper laid out flat has nearly 9,300 pounds of air above it.
When you break the ruler above, you are able to break it because of the 'heavy' air pushing down on the paper while you quickly strike the ruler. At first the table is pushing back on the paper, and if you move the ruler quick enough, other air around the edges of the paper can't get under the paper fast enough, so you are trying to lift that 9,300 pounds with the ruler! Some air gets under the paper, but not enough, so the ruler breaks.
1．By doing the experiment, we may realize .
A．that air exits everywhere
B．why there are directions
C．that we live with air pressure
D．how air helps on the earth
2．How many steps are there in this experiment? .
A．2 B．3 C．4 D．5
3．The underlined word “exert” probably means .
A．cover completely B．advocate actively
C．influence gradually D．press heavily
4．The ruler breaks under a quick strike mainly because of .
A．the air pressure on the newspaper B．the heavy weight of the newspaper
C．the heavy weight of the flat table D．the strong power used on the ruler
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
What is a big dream? (1) Or, is a big dream something that provides only entertainment? Children dream big dreams, but there are three barriers to realizing dreams. They often kill them before they ever have a chance to grow.
The Self
Immediately following the birth of a big dream, a negative self-talk takes over and gives all the reasons why it cannot happen. This inside voice is the ego(自我). It’s there for protecting and should be listened to. (2) Most people are influenced by the inside voice. That’s why only a handful of people make their dream come true.
(3)
Family and friends are a lot like the ego. They want to protect those they love, so they will often list all the reasons why the big dreams won’t come true. Sometimes, family and friends destroy dreams of those they love most, out of their own fear of being left behind.
The World
If one gets past the first two barriers, one has to face the world. (4) In the past, big dreamers were locked up and sometimes even killed when they were shown to the world. Fortunately, in most of the world today, big dreamers just get laughed at.
The way to realize a big dream is with confidence and action. When children have confidence and then take action, they will be ready to accept any failure. The truth is that every great dreamer whose dreams have never seen the light of success knows failure well. (5)
| A．Family and Friends |
| B．How Big Dreams Die |
| C．Does a big dream show one’s future? |
| D．They simply fail until they succeed. |
F.Sometimes it is right, but more often it is wrong
G.And their big dream is to be a rock star or a famous artist.