更多"A) forest D) range C) kitchen D) s"的相关试题:
[单项选择]A) forest D) range C) kitchen D) solar
[单项选择]Solar energy causes
A. less pollution than oil
B. the same pollution as oil
C. more pollution than oil
D. financial problem
[单项选择]Communication satellites generally use solar cells as their source of electric power, although some test satellites have used thermoelectric generators.
A. superior
B. authorized
C. former
D. experimental
[单项选择]Solar energy causes
A) less pollution than oil C) the same pollution as oil
B) more pollution than oil D) financial problem
A. Solar energy causes
B. less pollution than oil
C. more pollution than oil
D. the same pollution as oil
E. financial problem
[单项选择]Solar energy is generated as protons fuse to form helium atoms.
A. bred
B. conceived
C. developed
D. produced
[单项选择]The solar system in astronomy consists of the sun and its planets. EXCEPT （）, all the planets got their names from Greco-Roman mythology.
A. Mars
B. Earth
C. Venus
D. Jupiter
[单项选择]All the planets in the Solar system except Mercury and Venus have natural satellites, — objects that revolve around the planets.
A. ( which
B. ( which are
C. ( of which
D. ( and which
[单项选择]The biggest reason for not using more solar power now is ______.
A ) money C) space
B) time D) pollution
[单项选择]According to the passage, extending solar record is important for which of the following reasons
[单项选择]According to the second theory, why did the solar system clear everywhere except in the asteroid belt
A. The asteroid belt was too far away from the sun.
B. In the asteroid belt, the gravity of Jupiter was strong enough to balance the opposing pull of the sun.
C. The solar system prevented fragments from accreting into their own planets.
D. The asteroids are leftovers from the days of creation.
[单项选择]In countries where a solar calendar was adopted, the length of each year need to be ______ in order to have the same number of months in each year.
A. changed
B. altered
C. transformed
D. modified
[单项选择]
Passage 1
The Solar Decathlon is under way, and trams of students from 14 colleges and universities are building solar-powered homes on the National Mall in Washington, D.C. in an effort to promote this alternative energy source. This week judges in this Department of Energy (DOE) sponsored event will evaluate these homes and declare one the winner. Unfortunately, for the participants, it mined on the Sept 26th opening ceremonies, and the skies over the Washington have remained mostly overcast since. However, the conditions may have made for a more revealing demonstration of solar energy than was originally planned.
Although the Solar Decathlon’s purpose is to advertise the benefits of electricity-generating solar panels and other residential solar gadgets, the bad weather has made it hard to ignore the limitations. As fate so amply demonstrated, not every day is a sunny day, and indeed DOE’s "Solar Village on the National Mall" has re
A. technology
B. contest
C. strategy
D. machine
