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If a person weighs 68kg on Earth, about how heavy would he or she feel on Mars()?
A、4 kg
B、26 kg
C、68 kg
D、136 kg
The atmosphere of Mars consists mostly of ______.
A、oxygen
B、carbon dioxde
C、helium
D、nitrous oxide
Which of the following places on Earth makes a bad Mars analog()?
A、The Arctic
B、Antarctica
C、Mojave Desert
D、Amazon Rainforest
______ and ______ are the two moons of Mars.
A、Mercury, Venus
B、Asaph,Hall
C、Phobos, Deimos
D、Romeo, Juliet
