The Himalayas，which stretch some 2，900 kilometers between India Pakistan，China，and Nepal，are the world's tallest mountain range.In addition to Mount Everest，the world's tallest mountain by peak elevation standing 8，848 meters tall，the range also features several other mountain peaks over 8，000 meters.It is the only mountain range to have mountains over 8，000 meters-the runner-up is a mountain range in South America，whose tallest peak is just 6.962 meters tall.
Millions of years ago，these mountain peaks didn't exist.The Asian continent was mostly complete，but India was an island floating off the coast of Australia.Around 220 million years ago，around the time when Pangea was breaking apart，India started to move northwards.It travelled some 6，000 kilometers before it finally hit Asia around 40 to 50 million years ago.Then，part of the Indian landmass（陸塊）began to go beneath the Asian one，moving the Asian landmass up，which resulted in the rise of the Himalayas.It's thought that India's coastline was denser and more firmly attached to the seabed，which is why Asia's softer soil was pushed up rather than the other way around.
The mountain range grew very rapidly in comparison to most mountain ranges，and it's actually still growing today.Mount Everest and its fellows actually grow by approximately a net of about a centimeter or so every year.The Appalachian Mountains in North America，which developed some 300 million years ago or more，is actually decreasing in peak elevations as it erodes（侵蝕）.
The continued growth in the Himalayas is likely due to the Indian tectonic（地殼構(gòu)造上的）plate still moving slowly but surely northward.We know the plate is still moving in part because of the frequent earthquakes in the region.
（1）What do the underlined words "the runner-up" in paragraph 1 probably mean？ DD
A．The fastest.
B．The lowest.
C．The most popular.
D．The second tallest.
（2）What led to the formation of the Himalayas？ DD
A．The long coastline of India.
B．The fast movement of India.
C．The firm attachment of Asia to the seabed.
D．The meeting of India with the Asian continent.
（3）What can we learn from paragraph 3？ CC
A．Most mountains in the world grow rapidly.
B．The Appalachian Mountains have soft soils.
C．Mount Everest will be about one meter taller in a century.
D．The Appalachian Mountains was once taller than the Himalayas.
（4）What will happen to the Himalayas in the future？ AA
A．It will continue to grow.
B．It will move southwards.
C．It will attract more tourists.
D．It will have fewer earthquakes.
【答案】D；D；C；A
【解答】
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發(fā)布：2024/5/27 14:0:0組卷：0引用：3難度：0.6
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D．A research paper on kid's health．發(fā)布：2024/12/19 20:30:1組卷：36引用：3難度：0.7 -
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