There are many other galaxies in the universe and each has billions of stars.(B)回答问题。I. How many planets are there in our solar system?2. Why do scientists think there is no life on other planets in the solar system?3. Why has no spaceship travelled to other stars in our Galaxy...
However, we have not found life on any other2.(planet) yet.The earth is a planet and it 3.(go) around the sun. The sun and 4.(it) planets are called the solar system. There are seven other planets in our solar system,but none of them 5.(have) an environment like that of the...
65.C.词义猜测题.根据 However,intelligent beings may contact us in other way,可知智能生物可能会用其他方式联系我们,故推测此处的life forms指的是intelligent beings,智能生物.故选C. 点评 本篇是一篇科普知识类阅读短文.本文叙述了科学家认为其他星球也存在智能生命,因为宇宙形成的时间这么长,足够其他星球形成生...
“This is long enough for other planets to have intelligent life,” say Shostak and Barnett. The second reason is size—the universe is huge. “Tools like the Hubble Telescope (哈勃望远镜) have shown that there are at least 100 billion galaxies,” says Shostak. “And our galaxy, the ...
Is there intelligent(有智力的)life on other planets? For years, scientists said "No." or "We don't know." But today this is changing. Seth Shostak and Alexandra Barnett are astronomers(天文学家). They believe intelligent life exists(存在)somewhere in the universe. They also think we will...
【题目】Is there intelligent(有智力的) life on other planets? For years, scientists said "No. "or "We don'tknow. " 6._ Seth and Alex are astronomers(天文学家). They believe intelligent life exists(存在) somewhere in the universe. They also think we will soon communicate with these ...
Is there intelligent (有智力的) life on other planets?For years,scientists said"no"or"we don't know."But today this is changing.Seth Shostak and Alexandra Barnett are astronomers (天文学家).They believe intelligent life exists (存在) somewhere in the universe (宇宙).They also think we will...
There isn’t intelligent life on other planets. 其他星球上没有智能生命;D. We don’t have the right tools to receive their messages.我们没有合适的工具来接收他们的信息。根据第4段倒数第3句In fact, they may be trying to communicate with us now, but we don’t have the right tools (工具)...
Is there intelligent (有智力的) life on other planets. For years, scientists said “no. " or “we don't know. " But today this is changing. Seth Shostak and Alexandr a Barnett are astronomers(天文学家). They believe intelligent life exists (存在) somewhere in the universe. They also ...
"This is long enough for other planets to have intelligent life," say Shostak and Barnett.The second reason is size---the universe is huge. "Tools like the Hubble Telescopes(哈勃望远镜)have shown that there are at least 100 billion galaxies," says Shostak. "And our galaxy,the Milky Way,...