1. Scientists think that on other planets in our solar system there are _______
A. probably some other intelligent beings.
B. probably no other intelligent beings.
C. certainly some other intelligent beings.
D. certainly no other intelligent beings.
2. Scientists think that any intelligent beings on other planets in our solar system.
A. would live under thousands of tons of pressure.
B. would be very different from us.
C. would already be traveling in space.
D. would have adapted themselves to conditions better than we have done.
3. What do creatures do to stay alive if conditions around them change?
A. to travel in space.
B. to grow in the Arctic.
C. to go to other worlds.
D. to adapt themselves.
4. The bolded word "They" in the passage refers to
A. planets.
B. conditions.
C. other thinking beings.
D. billions of stars.
5. Other human beings live
A. possibly on other planets of stars in our galaxy.
B. possibly on other planets in our solar system.
C. possibly on other stars in our own galaxy.
D. everywhere in the universe.