IV. Choose the word or phrase - A, B, C or D -that needs correcting.
The average (A) temperature on Mars (B), the fourth planet from (C) the sun, is about eighty degrees than colder (D) on Earth.
A.average
B.on Mars
C.planet from
D.than colder

IV. Choose the word or phrase - A, B, C or D -that needs correcting.
Halley's comet was named of (A) the astronomer Edmund Halley, who was (B) the first to realize (C) that some comets appear (D) in regular cycles.
A.named of
B.was
C.to realize
D.appear

IV. Choose the word or phrase - A, B, C or D -that needs correcting.
If I were (A) a little taller I could be (B) astronaut (C), but I don't meet (D) the height requirement.
A.were
B.could be
C.astronaut
D.don't meet

V. Fill in each blank space with one appropriate from the box.
Some day people will certainly try to build settlements on the moon. The best places for houses in a moon town will be a cave or a tunnel. Underground houses will not be squashed by meteorites that constantly fall on the moon (26) outer space. This will be important on the moon, (27) daytime is so hot that food could be cooked in the rocks, and the nights get bitterly cold.
Pioneer moon homes may be made of airtight plastic that can be (28) like a balloon inside the cave. The reason for this is that the moon has no air around it. The pioneers will have to take along from the earth the oxygen masks when they are away from home. But the balloon house (29) will be filled with air. Perhaps the house will have beds, tables, and chairs, built into it. These can be inflated, too. So people will sleep, eat and work on air! Moon-house building will be easy. The moon’s gravity is less than the earth’s. Everything weighs only (30) as much as it does on the earth.
(27)
A.and
B.since
C.so
D.but

V. Fill in each blank space with one appropriate from the box.
Some day people will certainly try to build settlements on the moon. The best places for houses in a moon town will be a cave or a tunnel. Underground houses will not be squashed by meteorites that constantly fall on the moon (26) outer space. This will be important on the moon, (27) daytime is so hot that food could be cooked in the rocks, and the nights get bitterly cold.
Pioneer moon homes may be made of airtight plastic that can be (28) like a balloon inside the cave. The reason for this is that the moon has no air around it. The pioneers will have to take along from the earth the oxygen masks when they are away from home. But the balloon house (29) will be filled with air. Perhaps the house will have beds, tables, and chairs, built into it. These can be inflated, too. So people will sleep, eat and work on air! Moon-house building will be easy. The moon’s gravity is less than the earth’s. Everything weighs only (30) as much as it does on the earth.
(29)
A.it
B.its
C.itself
D.this

VII. Choose the phrase that best completes the sentence.
______ by meteorites whose impact formed craters of all size.
A.The surface of the moon was shaped
B.The moon whose surface shaped
C.The surface of the shaped moon
D.The surface was forming the shape of the moon

VII. Choose the phrase that best completes the sentence.
Many craters on the earth's surface were probably formed by very large meteorites ______.
A.when smashed into the ground was an explosion
B.which smashed into the ground and an explosion
C.smashing into the ground and exploding
D.they smashed into the ground and exploded

VII. Choose the phrase that best completes the sentence.
Throughout history, the moon has inspired not only song and dance ______.
A.but poetry and prose as well
B.but poetry also prose
C.together with poetry and prose
D.and also poetry and prose

VII. Choose the phrase that best completes the sentence.
Claudius Ptolemy, ______ of the first century A.D., left a good description of the geocentric theory.
A.he was an astronomer and a philosopher
B.being an astronomer and a philosopher
C.an astronomer and who was a philosopher
D.who was an astronomer and a philosopher

A.
B.guilty
C.biscuit
D.building