The sun heats the earth,（）is very important to living things.
第1题：
All the other five planets ________.
[A] always appear near the path of the sun
[B] are moving in a way more complicated than the earth does
[C] aren't moving around the sun as independently as the earth does
[D] are moving around the sun at the same speed as the earth does
第2题：
The earth ______ round the sun in 365 days .
A moves
B moved
C is moving
D move
第3题：
The article suggests that______.
A. our earth exists before the sun
B. how space formed
C. no one knows where the earth comes from
D. our earth used to be part of a high mountain on the sun
48．答案为D 从最后一段及its tidal pull had become so powerful that this mountain was torn to pieces and threw off small parts of itself into space可推断地球也是在太阳爆炸的小碎片中形成的。
第4题：
The atmosphere again acts our protective blanket on _____
[A] stars
[B] sun
[C] earth
[D] space
选C
act as“充当、起……作用”;act for“代表、代理”;act on“按照”。本句意为大气层起到保护伞的作用。
第5题：
Neap tides occur ______.
A.at the start of spring, when the Sun is nearly over the equator
B.only when the Sun and Moon are on the same sides of the Earth and are nearly in line
C.when the Sun and Moon are at approximately 90°to each other, as seen from the Earth
D.when the Sun , Moon, and Earth are nearly in line, regardless of alignment order
第6题：
A、one of the suns’ planets
B、one of the sun's planets
C、one of the sun’s planet
D、one of the suns’ planet’s
第7题：
The earth ____ around the sun.
A、revolved
B、revolves
C、is revolved
D、was revolved
第8题：
It is stated in astrology that ________.
[A] the sun is so distant from us that it was hard to follow its motion
[B] the sun was moving westward around the sky
[C] the motion of the sun is at the rate of about thirty degrees every week
[D] the motion of the sun is similar to the revolution of the earth around the sun
第9题：
A、moves
B、moved
C、move
D、has moved
第10题：
A mean sun is used as the reference for solar time for three reasons. Which reason is NOT a cause for use of a mean sun?
A.The motion of the apparent sun is along the ecliptic
B.Measurement of time is along the celestial equator
C.The speed of the Earth's revolution is not constant
D.There are variations in the Earth's rotational speed