11.He was faced with the________ of whether or not to return to his country after he got a PhD in America.(situation, circumstance, environment, dilemma)
答案：dilemma 解析：考查名詞辨析。句意：他面臨著在美國(guó)獲得博士學(xué)位之后是否回國(guó)的兩難境地。根據(jù)whether or not可知應(yīng)選dilemma，意為“(進(jìn)退兩難的)窘境，困境”。
12.In recent years, many mainland residents have rushed to Hong Kong to buy baby milk powder due to their ________ about its quality.(anxiety, curiosity, generosity, attention)
答案：anxiety 解析：考查名詞辨析。句意：近年來(lái)，許多大陸居民奔赴香港購(gòu)買嬰兒奶粉，因?yàn)樗麄儞?dān)心奶粉的質(zhì)量。anxiety意為“擔(dān)心”，符合語(yǔ)境。curiosity意為“好奇”;generosity意為“慷慨”;attention意為“注意”，均與語(yǔ)境不符，故排除。
13.Finding information in today's world is easy. The ________ is how you can tell if the information you get is useful or not.(knowledge, ability, competition, challenge)
答案：challenge 解析：考查名詞辨析。句意：當(dāng)今世界找尋信息很容易，但困難的事是你如何辨別你所獲得的信息是否有用。knowledge“知識(shí)”;ability“能力”;competition“競(jìng)賽”;challenge：“挑戰(zhàn);艱巨任務(wù)”。
14.The lead singer was ill and couldn't sing that night, and her ________ didn't perform well, which made the audience disappointed.(attitude, substitute, institute, altitude)
答案：substitute 解析：考查名詞辨析。句意：那天晚上主唱歌手生病了，無(wú)法演出，替代她的歌手表演得不好，這讓觀眾很失望。attitude態(tài)度;substitute代替者;institute學(xué)院，研究所;altitude高度，海拔。根據(jù)句意可知應(yīng)選substitute。
15.Mo Yan, a most widelyread writer, takes a complete new ________ to describing China's rural and folk culture.(way, approach, passage, entry)
答案：approach 解析：考查名詞辨析。句意：莫言的作品被廣泛閱讀，他采用了全新的方法來(lái)描述中國(guó)的鄉(xiāng)村民俗文化。an approach to為固定搭配，相當(dāng)于a way of，意為“……的方法”;passage指人們行走的“通道，走廊”;entry意為“進(jìn)入;進(jìn)入權(quán);入口處”。
