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更多“Seed dormancy means that seed does not germinate at any conditions.”相关的问题
A、Exposure to heat
B、Exposure to cold
C、Abrasion of the seed
D、Exposure to moisture
A．only a single feature of endospore biology was responsible for their success
B．potentially, a canning process could be developed that was capable of destroying all endospores
C．ultraviolet radiation was a possible means of destroying microorganisms that practice cellular dormancy
D．cellular mitosis was the root cause of the resilience of the microorganisms under discussion
E．only single-celled organisms, like those of fungal spores, could practice cellular dormancy
The word "seminal" in the first paragraph means " ______ ".
A．living in a strange world
B．functioning as a seed
C．strong as plant
D．genetic transmutation
？Read the text below about The True Key to Value.
？In most of the lines 34--45 there is one extra word. It is either grammatically incorrect or does not fit in with the meaning of the text. Some lines, however, are correct.
？If a line is correct, write CORRECT on your Answer Sheet.
？If there is an extra word in the line, write the extra word in CAPITAL LETTERS on your Answer Sheet.
The True Key to Value
Eough Okay, the economy is unquestionably "bad" enough, but most of us still have to
Company put food on the table, manage our business company, and produce a profit.
34 And even though the economy may go up and down, some things
35 never change--one of which being, even in the tough times, when most of us cut back
36 on spending, nobody can completely stop spending. That means somebody is
37 always buying and somebody is always selling things. In tough economic times,
38 you just need to make sure that you are one of those doing some selling. The
39 key to selling anything success in these conditions is something that can be
40 referred to as "exceeding expectations". Quite so simply, this is the means by
41 which value is created and things get sold. You can not exceed expectations in
42 price, quality, or service--and possibly all three--but you must understand it
43 what it really means to exceed expectations before you can very actually do it.
44 The first thing to understand is this: The expectations you exceed today become
45 the likely seed for new opportunities in the future. This may seem obvious, but
many people fail to connect today's actions with future opportunities.
(34)
COMMENCEMENT : ADJOURNMENT ::
A．sapphire : fissure
B．signal : frequency
C．lasso: splice
D．activity : dormancy
E．rule : rebellion
Birds deserve credit not merely for demonstrating flight was possible, but for providing templates for the shape of aircraft wings. The wings of birds suggested the pattern for leadingedge wing slots that improve ascent at slow speeds and for conical cambered wingtips that increase lift and stability. Other characteristics of bird wings, such as a trailing edge flap to aid in smooth landings, were not recognized as important until they had been designed independently by aeronautical engineers. Considerable research effort in aeronautics could probably have been saved by more thorough analysis of bird flight.
The insect world has also contributed significant ideas in the realms of navigation and guidance. In order to aid airline navigation during take-offs and landings under adverse weather conditions, engineers developed a system for locating the sun when it was hidden by clouds through observing polarized light—light which travels in a single direction. The research was instigated(鼓励,激发)after studies of honey bees demonstrated that they used this mechanism to determine their location when the sky was darkened. In another credit to the insect world, the evasive guidance systems of certain missiles use angular acceleration detectors modeled after the multi-lensed eyes of houseflies which amplify subtle movements by splitting images into a mosaic(马赛克)resembling a large display of televisions tuned to the same channel.
Even entities which never take flight themselves are responsible for guiding the hand of aeronautical engineers. The winged seed of a palm tree was the model for an early glider, and the single-winged, autorotating maple seed was the prototype for a means of air-dropping cargo by parachute.
The author argues that money for aeronautical research money could be invested more efficiently if______.
A．more advanced products were used in airplanes
B．more research was devoted to studying bird flight
C．greater efforts were directed towards shape designs of aircraft wings
D．greater emphasis was put on guidance systems
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