根据第三段第二句 "Egyptian scientists first saw Mars in the sky more than 4, 000 years ago" 可知,人们第一次看到火星是在四千多年以前。故选A。 (2) 推理判断题。根据第五段第一句 "Mars also has the largest dust storms in the solar system" 可知,火星有最大的沙尘暴,沙尘暴一般伴随着大风。
If you thought you knew all there is to know about the moon, think again. Here are 10 cool facts about Earth's lunar neighbor.
The Red Planet also has the largest dust storms(沙尘暴)in the solar system. They can last for m 10 and cover the entire planet. You would not be able to breathe on the surface of Mars without special machines. The air is made up mostly of carbon dioxide(二氧化碳).相关...
Here are 100 Facts About Saturn 1. Saturn is the second-largest planet in the Solar System. Saturn comes in at amassive size, second only to Jupiter in our Solar System. It has a diameter of about 72,367 miles (116,460 kilometers), nearly nine times the diameter of Earth. If you w...
more than 5,000 galaxies, some of them as far as 13.2 billion light-years away. Since the light from these galaxies has taken eons to reach our solar system, it offers astronomers a window into what the universe looked like only a short time after the Big Bang some 13.7 billion years ...
The moon, located some 239,000 miles from Earth, is a curious, cratered world. Here are facts about the moon you didn't know.
Despite the fact that the moon was seen, recorded, and samples of it analyzed Earth-side, there are plenty of fascinating facts about the moon that aren't common knowledge.
如果选 universe,其前需要加上the。故选B。6.C 考查语境理解和形容词辨析。important重要的;possible可能的;basic基本的;natural自然的。联系下文“For example,Mars is home to a 21-km-tall mountain-the tallest in our solar system."可知,科学家了解的是基本事实。故选C。7.A 考查语境理解和名词辨析。
There are about 300 living languages in China today. Mandarin is the standard one. Here are more interesting details about theChinese language. It took over 1700 years and a million peasants, prisoners and soldiers to bulid the Great Wall. Morefacts about the Great Wall. ...
Explore 10 fascinating facts about Unix, from its inception at Bell Labs to its profound impact on computing, internet development, and open-source movements.