问题 解答题
3
1
8
:1.25
化成最简单的整数比是______;比值是______.
答案

(1)3

1
8
:1.25,

=

25
8
:1
1
4

=

25
8
5
4

=(

25
8
×8):(
5
4
×8),

=25:10,

=(25÷5):(10÷5),

=5:2;

(3)3

1
8
:1.25,

=

25
8
÷1
1
4

=

25
8
÷
5
4

=

25
8
×
4
5

=

5
2

故答案为:5:2,

5
2

判断题
阅读理解

阅读理解。

    To swim across the English Channel takes at least nine hours. It's hard work and it makes you short of

breath. To fly over the channel takes only twenty minutes as long as you're not held up at the airport, but

it's an expensive way to travel. You can travel by hovercraft (气垫船) if you don't mind the noise and that

takes forty minutes. Otherwise, you can go by boat, if you remember your sea-sickness pills. All these means

of transport have their problems, and the weary (厌烦的) traveler often dreams of being able to drive to

France in his own car. "Not possible, you say. Well, wait a minute. People are once again considering the

idea of a channel tunnel or bridge." This time, the great London Council (议会) is looking into the possibility

of building a channel link straight to London. A bridge would cost far more than a tunnel, but you would be

able to by rail or by car on a bridge, yet a tunnel would provide a rail link only.

     Why is this idea being discussed again? Is Britain realizing the need for links with Europe as a result of

joining EEC (欧洲经济共同体)? Well, perhaps, the main reason, though, is that a tunnel or bridge would

reach the twenty square kilometers of London's discussed dockland (船坞). A link from London to the

continent would stimulate (刺激) trade and revitalize (使重新具有活力) the port, and would make London

a main trading center in Europe. With a link over the Channel, you could buy your fish and chips in England

and be able to eat them in France while they are still warm!

1. The weary traveler thinks the best way to cross the Channel is _____.[ ]

A. by swimming

B. in his own car

C. by air

D. by hovercraft

2. According to the passage, a link from London to the continent would be _____. [ ]

A. necessary for its trade

B. important for its politics

C. useful for its industry

D. helpful for its culture

3. The main idea of the passage is _____. [ ]

A. how to develop the trade of London

B. when to cross the Channel

C. how to get to Europe from London more conveniently

D. what to do in the developing of traveling