Starting with the ___ that there is life on the planet Mars, the scientist went on to develop his argument.
举一反三
- There could be life on the Mars in the future if（） A: it supported life in the past B: certain gases are used to cool the planet C: the atmosphere can be heated enough to grow simple plants D: the planet’s volcanoes become as active as they were in the past
- Mars is the _____ planet from the Sun.
- Which planet is the closest planet to the sun, Mercury, Mars, Venus or Jupiter
- A<br/>valid argument must be a sound argument, but a sound argument is not<br/>necessarily a valid argument.
- “Mary believes that there is life on Mars” implies “Mary knows that there is life on Mars”. （ ）