67. This text is most probably taken from_　

A. a research paper　

B. a newspaper report　

C. a class presentation　

D. a geography textbook. 　

答案　 64.A　 65.D　 66.C　 67.B

Passage 18

(09·全国ⅡC篇)

GUATEMALA CITY (Reuters) – A fish that lives in mangrove swamps(红树沼泽)across the Americas can live out of water for months at a time, similar to how animals adapted(适应)to land millions of years ago, a new study shows. 　

The Magrove Rivulus, a type of small killifish, lives in small pools of water in a certain type of empty nut or even old beer cans in the mangrove swamps of Belize, the United States and Brazil. When their living place dries up, they live on the land in logs(圆木)，said Scott Taylor, a researcher at the Brevard Endangered Lands Program in Florida. 　

The fish, whose scientific name is Rivulus marmoratus, can grow as large as three inches. They group together in logs and breathe air through their skin until they can find water again. 　

The new scientific discovery came after a trip to Belize. 　

　“We kicked over a log and the fish just came crowding out,” Taylor told Reuters in neighboring Guatgemala by telephone. He said he will make his study on the fish known to the public in an American magazine early next year. 　

In lab tests, Taylor said he found the fish can live up to 66 days out of water without eating. 　

Some other fish can live out of water for a short period of time. The walking catfish found in Southeast Asia can stay on land for hours at time, while lungfish found in Australia, Africa and South America can live out of water, but only in an inactive state. But no other known fish can be out of water as long as the Mangrove Rivulus and remain active, according to Patricia Wright, a biologist at Canada’s University of Guelph. 　

Further studies of the fish may tell how animals changed over time. 　

　“These animals live in conditions similar to those that existed millions of years ago, when animals began making the transition(过渡)from water onto land,” Wright said. 　

66. Which of the following is the result of the volcanic eruption?　

A. People stop traveling in Europe　

B. Airlines suffer from the loss of planes　

C. It becomes dangerous for animals to eat outside　

D. Farmers have lost many of their animals　

65. What keeps Grimsvotn still? 　

A. The slow flow of water　

B. The low water temperature　

C. The thick glacier　

D. The water pressure　

64. What makes Grimsvom different from other volcanoes?　

A. It is below ice. 　

B. It lies under the sea　

C. It is the largest volcano　

D. It is lava affects the airlines　

63. The experiment is carried cut to prove ______.

A. water pushes on your body when you swim underwater.

B. the earth is surrounded by a layer of air called the atmosphere.

C. the pressure of air around us has a powerful force.

D. the air pressure is not equalized around us.

答案　 60.B　 61.C　 62.D　 63.C

Passage 17

(09·辽宁C篇)

A volcanic　eruption　in　Iceland　has　sent　ash　across　northern　Europe. Airlines　have　stopped or　changed　the　flights　across　the　Atlantic　Ocean,　leaving　hundreds　of　passengers　stuck　in　airports. 　

Grirmsvom　is　one　of　the　largest　and　most　active　volcanoes in Europe. What makes Grimsvom different is that it lies under a huge glacier(冰川) of ice up to 12 maters thick. The hot volcano heats up the ice above it, which then forms a layer(层)of water between the glacier and the volcano This layer of water puts pressure on the volcano, keeping it stable, As the water flows out from under the glacier, the pressure lifts. The lava(岩浆) from the volcano then comes up to the surface. This is exactly what happened today. 　

Now, airlines have to make changes to their flights so as not to fly through the clouds of volcanic ash. According to KLM. one of Europe’s biggest airlines, airplanes cannot go under the cloud or over it. Going through the cloud can result in ash getting stuck in the airplane’s engines, causing damage to the plane. 　

The eruption has also caused problems for animals in Iceland. The volcano left ash and sharp. Glass-like rocks all over the countryside. Farmers are keeping their animals inside to stop them from eating ash- covered grass to the sharp object. 　

62. How did the egg put into the bottle？

A. The oxygen inside the bottle sucked the egg in.

B. It became salt without the shell.

C. The neck of the bottle was wide enough.

D. The outside air pressure forced it into the bottle.

61. In the experiment, the burning inside the bottle can___.

A. equalize the air pressure inside and outside

B. make a seal in the neck of the bottle

C. finish up the oxygen inside the bottle

D. produce more oxygen inside the bottle

60. Why is there the need to take care when you are doing the experiment?

A. The bottle could break.

B. You need to light the paper with a match.

C. The egg needs to be shelled.

D. The egg has to be perfectly placed on the neck of the bottle.

70．The underlined word “dissolve” is used to express the idea that organic matter and minerals from soil are 　　　　　．

A．rushed away into the river

B．cleaned and purified by water

C．destroyed and carried away by water

D．mixed with water and become part of it

答案　 67.B　 68.B　 69.C　 70.D

Passage 16

(09·江西B篇)

The surprising experiment I am about to describe proves that air is all around you and that it proves down upon you. Air pressure is a wonderful force. When you swim underwater, you can feel water push down your body. The air all around you does the same. However, your body is so used to it that you do not notice this. The pressure is caused by a layer of air called the atmosphere. This layer surrounds the Earth, extending to about five kilometers above the Earth’s surface.

The following experiment is an easy one that you can do at home. But make sure that you are supervised, because you will need to use matches. Now foe the experiment！

What you need

·A hard-boiled egg without the shell

·A bottle with a neck slightly smaller than the egg

·A piece of paper

·A match

Metheod

1) Check that the paper will sit firmly on the neck of the bottle.

2) Tear the paper into strips and put the strips into the bottle.

3) Light the paper by dropping a burning match into the bottle.

4) Quickly sit the egg on the neck of the bottle.

Result

Astonishingly, the egg will be sucked into the bottle. Your friends will be amazed when you show them the experiment. But be careful when you handle matches.

Why it happened

As the paper burns, it needs oxygen and uses up the oxygen (air) in the bottle. The egg acts as a seal in the neck of the bottle, so no more air can get inside. This reduces the air pressure inside the bottle. The air pressure must equalize, so more air from outside must enter the bottle. The outside air pressure against the egg and then the egg is pushed into the bottle! The proves that air is all around and that it is pressing down on it.

69．We can infer from the passage that the water table lies　　　 ．

A．between the topsoil layer and the subsoil layer

B．in the subsoil layer above bedrock

C．between the subsoil layer and bedrock

D．in the bedrock layer beneath the subsoil