[考題] 100北門高中英文 Q.19.20已刪文
19. As urbanization continues, 6.4 billion city dwellers will need access to
energy. That is, 80% of all greenhouse gases are caused by the _____ of
cities for energy.
(A) ignition (B) liability (C) obligation (D) appetite
答案D 不知道怎麼解釋
20. The _____ behind lung cancer is smoking and air pollution;
thus, those who are susceptible to cancer are advised
to avoid smoking and second-hand smoking.
(A) likelihood (B) culprit (C) magnet (D) catalyst
答案是B 想請問為什麼D不可以選
謝謝^^
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