Part IV Reading Comprehension (Reading in Depth)

　　Section A

　　47. 30

　　48. underestimates

　　49. Any zoo that is a member of a zoo federation or association.

　　50. caliber/ criterion/ standard

　　51. Disbelieving. / Skeptical. /Doubtful.

　　Part Ⅳ Reading Comprehension (Reading in Depth)

　　Section A

　　47.由第二段第一句“Zoos were originally created as places of entertainment，and their suggested involvement with conservation didn't seriously arise until about 30 years ago...”可知正確答案為“30”。

　　48.從第三段第二句“This is probably the document's first failing，as I believe that 10，000 is a serious underestimate of the total number of places masquerading as zoological establishments.”中可以看出，作者認為文件的第一個缺點是大大低估了全世界動物園的數目。明目繁多但實質是動物園的機構遠遠多于一萬這個數目。可見此處要填的詞是意為“低估”的動詞。因此，正確答案為“underestimates”。

　　49.第四段作者談到選擇參與保護項目的核心動物園的標準時提到“One would assume that the caliber of these institutions would have been carefully examined，but it appears that the criterion for inclusion on this select list might merely be that the zoo is a member of a zoo federation or association.”，實際上列入候選的唯一標準可能是：該動物園是動物園聯盟或者動物園協會的成員。故該題可以答為“Any zoo that is a member of a zoo federation or association.”。

　　50.由第四段第二句和第三句“One would as some that the caliber of these institutions would have been carefully examined，but it appears that the criterion for inclusion on this select list might merely be that the zoo is a member of a zoo federation or association.This might be a good starting point，working On the premise that members must meet certain standards，but again the facts don't support the theory.”可見人們都以為參與保護項目的動物園應該按照標準 (caliber)嚴格篩選，但沒想到例如候選的唯一標準(criterion)可能只是該動物園是動物園協會或者聯盟的成員。如果這些協會的成員達到一定的標準(standards)也就罷了，但事實并非如此。兩句話中“標準”三次出現。可見作者認為WZCS的第二個缺點是在挑選參與保護項目的動物園時，沒有嚴格的標準。因此，此題要填的詞為文中所出現的“caliber/criterion/ standard”中的任何一個。

　　51.文章第五段作者提到：Colin Tudge預測全球合作的喂養保護項目可以保護大約2 000種瀕臨滅絕的陸地脊椎動物。隨后，在第六段中作者講到30年以來只有16種物種可以說是被圈養保護項目所拯救了。這離Tudge所說的2 000種物種得到保護的目標還差得很遠。稍加推測可知，作者對Tudge預測的目標是不信任的、懷疑的。因此，答案可以是“Disbelieving./Skeptical./Doubtful.”。