更多"_______ its 'weights' is the Earth'"的相关试题:
[单项选择]In Earth's infancy, its surface was warm enough for life ____ the young Sun was fainter than it is today.
A. ( in spite of
B. ( whether
C. ( neither of which
D. ( even though
[单项选择]Where is the gravitational pull of both the earth and the moon on an object equal
A. In the middle between the earth and the moon.
B. A point closer to the earth between the moon and the earth.
C. A point closer to the moon between the earth and the moon.
D. No such point exists.
[单项选择]It can be seen from the passage that the earth's supply of natural medicines
A. may never be exhausted.
B. may be dropping rapidly.
C. is surprisingly big.
D. is as rich-as ever.
[单项选择]Approximately (three - fourths) of (the earth's) surface (are) covered (with) water.
A. three-fourths
B. the earth’s
C. are
D. with
[单项选择]Scientists generally agree that the Earth's climate will warm up over the next 50 to 100 years ______ it has warmed in the 20000 years since the Ice Age.
A. as soon as
B. as long as
C. as much as
D. as well as
[单项选择]Sedimentary rocks cover much of the Earth’s surface, but they are often {{U}}hidden{{/U}} by a thin veneer of soil.
A. concealed
B. eroded
C. protected
D. softened
[填空题]It has calculated that the earth's circumference around the equator is over forty miles longer than that around the poles().
[单项选择]What has happened to the earth's temperature over the last 18 years according to satellite data
A. It has increased slightly.
B. It has not changed.
C. It has decreased slightly.
D. It is not sure if it has changed.
[简答题]As evidence that the Earth's atmosphere is warming continues to accumulate, scientists are making slow progress toward an answer to the big question raised by the evidence: How much of the warming is due to human activity and how much to natural causes
[单项选择]If the temperature at the earth's surface is twenty degrees Fahrenheit, the temperature in a coal mine 500 feet below the surface would, in degrees, be _____________.
A. 50
B. 40
C. 30
D. 120
[单项选择]The speaker advises us to use the Earth's resources wisely because ______.
A. the Earth is heavily polluted
B. nature cannot recycle its resources
C. there are more and more people on the Earth
D. no more new resources can be added
[单项选择]It has been estimated that the earth's surface temperature has increased ______ one quarter to three quarters of a degree since 1850. ~
A. to
B. by
C. at
D. with
[单项选择]Why is more earth's heat blocked from escaping with more carbon dioxide in the atmosphere
[单项选择]What percentage of the earth's water can man actually use at present
A. Nearly 75 per cent.
B. About 97 per cent.
C. Exactly 3 per cent.
D. Less than 3 per cent.