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國營事業◆英文題庫下載題庫

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        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 moon population on two islands in the South Pacific. But   28   last year, the butterflies had 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" genes that control the Wolbachia bacteria that is   31   down from the mother and kills the male embryos   32   they hatch. “To my   33   , this is the fastest evolutionary change that has ever been observed, “said Sylvain Charlat,   34   University College London,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

【題組】28


答案:B,D
難度: 困難

        The tropical..-阿摩線上測驗