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【判断题】
金鱼草为水生花卉。（ ）A.
正确
B.
错误
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【简答题】A) attempt B) cheaper C) classify D) coauthored E) come F) effort G) enable H) especially I) exactly J) identify K) obstacle L) small M) soaring N) well-being O) yet Researchers have identified 1.4 mi...
【简答题】中温回火的温度是（ ）A. A．150~250 ℃ B．350~500 ℃ C．500~600 ℃ D．250~350 ℃
【单选题】Little _____ about A-H1N1 so far, so there is no doubt that many people are afraid when talking about the disease. [ ]
A.
did scientists know
B.
scientists have known
C.
have scientists known
D.
had scientists known
【简答题】中温回火的温度是（），中温回火后的组织为（）。
【单选题】Where Have All the Bees Gone? ?? Scientists who study insectshave a real mystery on their hands. All across the country, honeybees areleaving their hives and never returning. Researchers call this phe...
A.
Honeybees are flying all across the country
B.
25-40 percent of the honeybees in the US have died
C.
Honeybees are leaving their hives and do not return
D.
Honeybee hives are in disorder
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