久久精品视频亚洲_黄色成人在线免费_成人免费在线视频网址_91精品国产沙发_日韩国产一区三区_精品久久久av_美女扒开尿口让男人操亚洲视频网站_国产精品成人免费视频_国产成人精品久久久_久久精品国产亚洲_欧美国产日韩xxxxx_91在线免费看网站_**欧美日韩vr在线_日韩欧美一区二区在线_国产一区二区三区视频免费_中文字幕一区二区三区电影

The Grand Canyon

Probably you have seen photographs of the Grand Canyon, the great valley in the desert country of Arizona. But you must go there yourself to feel its true size and beauty. The Grand Canyon is one of the greatest natural wonders of the world.

  The Colorado River formed the Grand Canyon over millions of years. Slowly, the river cut down through hard rock. At the same time, the land was rising. Today , the canyon is one and a half kilometers deep and 445 kilometers long. The oldest rocks at the bottom of the canyon are more than billion years old. The width varies from about 200 metres to 29 kilometers across. The rim or top of the canyon is about 2,300 metres above sea level on the South Rim ,and about 3000 metres on the other side, the North Rim. As a result, there are different kinds of plants and animals on opposite sides of the canyon. The South Rim is dry desert country. The North Rim has tall forests.

  The canyon looks different at different times of day, and in different seasons and weather. At sunrise and sunset the red, gold, brown, and orange colours of the rocks are especially clear and bright. In winter, the canyon is partly covered with snow .

  The view from the South Rim of the Grand Canyon is the best. Most visitors come to the South   Rim and stay in campgrounds or hotels. Every point along the canyon’s edge offers a different view.

  The North Rim of the Canyon if quieter. It takes all day to drive there from the South Rim because there is only one bridge across the Colorado River. On the way , you go through Navado Indian lands, and a colourful pink desert called “The Painted Desert”.

  You can walk down into the Grand Canyon ,or you can go down on the back of a mule. You can also take a boat trip down the Colorado River, and camp on the beaches at night.But whether you see the Grand Canyon from the top or the bottom , it will be an experience that you will never forget.

------------------------------------------------------------------------------------------------------------------------------------------

Reading Comprehension

1. The best way to feel the size and beauty of the Grand Canyon is ________.

A. to see its photographs

B. to listen to the report about it

C. to travel there yourselves

D. to watch its program

2. What made the Grand Canyon?

A. The earthquake.     

B. The water from the Colorado River.

C. The American people     

D. The strong wind

3. From the passage we can know that the_____of the canyon is different at different time.

A.length       B. scenery     C.width    D.height 

4. If you go to visit the canyon you’d better go to _______.

A. the South Rim            B. the North Rim

C. the bottom               D. the top of a tree

------------------------------------------------------------------------------------------------------------------------------------------

Background information

The Grand Canyon is a steep-sided canyon carved by the Colorado River in the United States in the state of Arizona. It is contained within and managed by Grand Canyon National Park, the Hualapai Tribal Nation, and the Havasupai Tribe. President Theodore Roosevelt was a major proponent of preservation of the Grand Canyon area, and visited it on numerous occasions to hunt and enjoy the scenery. It is considered one of the Seven Natural Wonders of the World.

Vocabulary:

form  v.  形成

campground  n. 營地

width  n. 寬度

edge   n. 邊緣

mule  n. 騾子

Word Partnership:

go through  通過

be covered with  被...所覆蓋

Comprehension key:

1.C. 根據第一段介紹“But you must go there yourself to feel its true size and beauty.”旅游者必須親自游覽才能感受到峽谷的美麗。

2.B 根據第二段“The Colorado River formed the Grand Canyon over millions of years. Slowly, the river cut down through hard rock.”可知。

3.B 根據第三段“The canyon looks different at different times of day, and in different seasons and weather.”得知在不同季節和天氣下的大峽谷風景也是不同的。

4.A 根據第四段“The view from the South Rim of the Grand Canyon is the best. ”得知the South Rim的風景是最好的。