题目内容

A hawk(鹰), painted by Li Kuchan, is __________ in the exhibition in Beijing now．

[　　]

A．

displaying

B．

being displayed

C．

to display

D．

in display

答案：B
解析：

此题考查display的现在进行时的被动语态，now是时间状语。

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　　The United States has a new national park. It is the Great Basin. It is the first national park in the western state of Nevada. The new park is in the eastern part of Nevada, near the border(边界) with Utah. It is far from any city.

　　An American explorer John Charles Fremont traveled through the area in the early 1800's. He found the land shaped like a bowl. So he named it the Great Basin. It is a land of unusual beauty and sharp differences.

　　For example, you can climb a mountain covered with green forests, then cool yourself in a field of snow as you arrive at the top. Here and there, sharp rocks push out through the snow. Among the rocks you might see homes of the golden hawk (鹰), a bird that was once in danger of dying out.

　　You can camp in a campground on the edge of Lehman Caves. These caves are a group of large underground rooms made of limestone (石灰石). You can walk through them for about a kilometer. Before the park opened, the caves were the center of interests for anyone traveling through this area.

　　The state of Nevada has wanted a national park for more than sixty years. There have always been the opposite ideas from people who believed that a park would harm (损害) mining and agricultural interests. The bill that set up the park, however, promises that mines will remain open, and that sheep and cows will continue to feed on the mountainsides.

1．Lehman Caves are ________.

[　　]

A．about a kilometer each

B．connected with each other

C．rooms built of limestone

D．what interests visitors most

2．No national park was built in the Great Basin for a long time because ________.

[　　]

A．it was far from any city

B．some considered it harmful in some way

C．the place was found not long ago

D．the weather was bad there

3．You may reasonably conclude that ________.

[　　]

A．it often snows in the Great B……asin

B．the mountains there are quite high above sea level

C．the park is about one square kilometer

D．there are high mountains in the middle of the park

4．Which of the following shows the correct relationship between Nevada, Utah and the Great Basin?(N-Nevada U-Utah G the Great Basin)

[　　]

When we talk about boomerangs (回飞棒), we usually mean the curved devices(弯曲的设备) that return to you when you throw them, but there are actually two different kinds of boomerangs: the returning type and the non-returning type. Most returning boomerangs measure 30 to 60 cm across. Non-returning boomerangs are usually heavier and longer; typically 1 meter or more across, usually used as hunting weapons.

Experts believe the invention of boomerangs was mostly a matter of trial and error. First let’s consider how a primitive hunter might have come up with a non-returning boomerang. In nature, there are plenty of sticks that are bent in a curve like a boomerang, and people probably threw the sorts of sticks all the time. Because of the stabilizing motion of the two branches of the stick, this sort of stick would have stayed in the air longer and would have been easier to send in the desired direction. Primitive humans noticed this and so they started specifically seeking out bent sticks. Then they started selecting the best curved sticks (thinner, longer ones work better) and were soon making some changes so they were especially suited for taking down birds and animals.

Experts aren’t really sure when and where people first developed returning boomerangs, but the Aborigines of Australia are generally credited with the invention. The Aborigines used non-returning boomerangs, which they called kylies, widely in hunting, and the theory is that at some point, one or more Aborigines used a kylie with the particular shape of a boomerang and noticed that it traveled in a curve. That might have been a pure accident.

The amazing flight pattern of the new discovery didn’t really help out much in hunting—it actually made it harder to aim accurately—but it was, of course, really cool. Evidently, the Aborigines perfected the boomerang design and throwing technique for the simple pleasure of it. However, the boomerang did have some limited use in hunting. The Aborigines would set up nets in trees and then throw the boomerang into the air while making a hawk（鹰）call. This would scare birds so they would fly down into the nets.

51. What does the second paragraph mainly tell us?

A. How primitive men invented returning boomerangs.

B. How non-returning boomerangs were invented.

C. How the Aborigines of Australia use boomerangs.

D. How to throw and catch returning boomerangs.

52. We learn from the passage that returning boomerangs_________.

A. were developed from non-returning boomerangs

B. were invented earlier than non-returning boomerangs

C. are generally called“kylies”by the Aborigines

D. are heavier and longer than non-returning boomerangs

53. From the fourth paragraph, we can infer non-returning boomerangs are more suitable for hunting because _________.

A. they look more frightening