51. What does “that” in the third paragraph refer to?
(A) Some malaria parasites escaping from the ecosystems.
(B) Malaria parasites becoming immune to the engineered bacterium.
(C) Modified mosquitoes becoming more competitive than the wild ones.
(D) Transmission of malaria being blocked from mosquitoes to humans.
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統計: A(16), B(54), C(15), D(7), E(0) #607141
統計: A(16), B(54), C(15), D(7), E(0) #607141
詳解 (共 2 筆)
#5118489
Malaria瘧疾
parasite寄生蟲
immune免疫的
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0