Some scientists think there may have been life on the Mars in the past because ()
A: there is no life there now
B: there is a large amount of water at the poles
C: the Mars may be able to support life in the future
D: conditions may have been similar to those on the Earth
A: there is no life there now
B: there is a large amount of water at the poles
C: the Mars may be able to support life in the future
D: conditions may have been similar to those on the Earth
D
本题目来自[网课答案]本页地址:https://www.wkda.cn/ask/ayepzojjpyejzoo.html
举一反三
- Scientists think that there _____ life on Earth for millions of years. A: has had B: have had C: has been D: have been
- He was an early _______ of the theory that life on Earth may have come from Mars.
- If you had told me about your problem, I ____ able to help you. A: might be B: may have been C: may be D: might have been
- According to the author, many leading scientists ______. A: have acknowledged that only religion can explain the mystery of life B: have been puzzled by the mystery of life and material things C: have attempted to explain physical life from a religious point of view D: have been so intrigued as to make great efforts to solve the mystery of life
- As can be probably perceived, a manned trip to Mars may soon ________ since scientists have achieved the manned moon mission.
内容
- 0
Have scientists found of water on Mars?
- 1
“Mary believes that there is life on Mars” implies “Mary knows that there is life on Mars”. ( )
- 2
People’s life standards, health conditions and education have been improved by the revolution of ______.
- 3
In the introduction phase of product life cycle, company may have _____ sales volume.
- 4
Since parents are usually the major source of social support in early life, a child’s ______ of parental love may have effects on their life.