問題詳情

        The tropical blue moon butterfly has developed a way of fighting back   26    parasitic bacteria. Six years ago, males accounted for   27   1% of the blue moonpopulation on two islands in the South Pacific. But   28   last year, the butterflieshad evolved a gene to keep the bacteria   29   and male numbers were up to about 40%of the population. Scientists believe the comeback is   30   “suppressor＂ genesthat control the Wolbachia bacteria that is   31   down from the mother and kills themale embryos   32   they hatch. “To my   33   , this is the fastest evolutionarychange that has ever been observed, “said Sylvain Charlat,   34   University CollegeLondon,UK, whose study   35   in the. 
 
(A) know
(B) appearing
(C) before
(D) pass(AB) of (AC) passed (AD) just (BC) due(BD) by (CD) passing (ABC) knowledge (ABD) appears(ACD) in check (BCD) against (ABCD) due to
26

參考答案

答案：B,C,D
難度：困難0.352381
統計：A(18),B(57),C(51),D(51),E(1)

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