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A．A complicated system of several food chains.
B．A society that distributes food.
C．The relationship of one green plant to another.
D．The device that spiders use to catch food.
答案
更多“A．A complicated system of several food chains.B．A society that distributes food.C．The”相关的问题
第1题
What is the most probable meaning of the word "impasse" (Line 1,Para. 4)？
A．A very complicated situation hard to deal with.
B．A test that candidates for school boards should take.
C．A democratic process that the pro-science try to engage.
D．A possibility that no body can find an efficient solution.
第2题
听力原文： Teaching is supposed to be a professional activity requiring long and complicated training. The act of teaching is looked upon as a flow of knowledge from a higher source to an empty container. The student's role is one of receiving information; the teacher's role is one of sending it. However, teaching need not be the province of a special group of people nor need it be looked upon as a technical skill. Teaching can be more like guiding and helping than forcing information into a supposedly empty head. If you have a certain skill you should be able to share it with someone. All of us, from the very youngest children to the oldest members of our cultures, should come to realize our own potential as teachers. We can share what we know, however little it might be, with someone who has need of that knowledge or skill.
(26)
A．A professional activity.
B．Something special.
C．A technical skill.
D．Information.
第3题
A.1
B.2
C.2.5
D.3
第4题
A.show versio
B.show time
C.show this
D.show ru
第5题
The National Academy of Sciences holds the stance that ______.
A．DNA testing should be systematized
B．only authorized laboratories can conduct DNA testing
C．the academy only is authorized to work out standards for testing
D．the academy has the right to accredit laboratories for DNA testing
第6题
A．To tighten up banking rules.
B．To eliminate illegal acts.
C．To cancel the secrecy system.
D．To protect clients' interests.
第7题
A．Because the anti-piracy protection has been granted to some films.
B．Because the system cannot comply with high-quality DVD player.
C．Because the system may need additional equipment for proper operation.
D．Because there is flaw in its design.
第8题
A．Because of its size.
B．Because of its fuel.
C．Because of its complicated engine.
D．Because of its burning time.
