What happens to some residents who bum too much wood()
A. They could lose their homes.
B. They pay for the punishment.
C. They get sick from the smoke.
D. The fire could get out of control.
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
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
25()
A. tall
B. short
C. long
D. length
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