更多"A body weighs ______ from the surfa"的相关试题:
[单项选择]A body weighs ______ from the surface of the Earth.
A. less the farther it gets
B. the farther it gets, the less
C. less than it gets farther
D. less than it, the farther it gets
[单项选择]A body weighs _______ from the surface of the Earth.
A. less than it, the farther it gets
B. less the farther it gets
C. the farther it gets, the less
D. less than it gets farther
[单项选择]
All the useful energy at the surface of the earth comes from the activity of the sun. The sun heats and feeds mankind. Each year it (21) men with two hundred million tons of grain and (22) ten million tons of wood.
Coal, oil natural gas, and all other (23) are stored-up energy from the sun. It was collected by the plants as carbon compounds and stored (24) ago.
Even waterpower comes from the sun. Water (25) into vapor by the sun falls as rain. It runs (26) the mountains and is converted to electric power.
Light transmits only the energy (27) comes from the sun’ s outer layers, and (28) of this energy that is directed toward the earth never arrives. About (29) of it is absorbed by the atmosphere of the earth. In (30) ,the earth itself gets only one half-billionth of the Sun’ s entire output of rediant energy.
21（）
A. that
B. what
C. where
D. because
[单项选择]Seventy-five percent of the surface of the earth ______ by water.
A. are covered
B. is covered
C. have been covered
D. was covered
[单项选择]The oil under the surface of the earth ______ in the distant past.
A. manufactured
B. generated
C. originated
D. estimated
[单项选择]Three-fourths of the surface of the earth _______sea.
A. are
B. were
C. is
D. has been
[单项选择]It has been estimated that the earth's surface temperature has increased ______ one quarter to three fourths of a degree since 1850.
A. by
B. at
C. to
D. with
