【題組】
第一篇：
Since MacArthur and Wilson published their theory about how island species become extinct, people have become used to “facts” such as the extinction of as many as 100,000 species per year. People worry that we are 【21】 the world’s natural resources and the Earth will no longer be able to support all the people on it. A popular advertisement talks about the plants in the Amazon region. It says these plants may contain a new cure for a disease, and they may be lost if the area is not 【22】. But exactly how many species die each year? Do we believe “facts” about high numbers because they seem like they are correct or because we have actually 【23】 them? Predictions of animal, bird, insect and plant extinctions are 【24】 the idea that when one plant or animal disappears, many others follow. If, for example, a plant is lost because we build a city or a road where there was once a jungle, the insect that 【25】 the plant also dies. Then the bird that eats the insect dies and so on. All in all, the world is becoming a worse place as we destroy our natural resource. 【題組】21.三、克漏字測驗【請依照段落上下文意，選出最適當的答案】
(A) used out of
(B) used up
(C) using up
(D) run out of
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