例： The Dutch are not the only would-be moles. Growing numbers of Europeans are burrowing below ground to create houses, offices, discos and shopping malls…; in winter months in Montreal, Canada, for instance, citizens can escape the cold in an underground complex compete with shops and even health clinics. In Tokyo builders are planning a massive underground city to be begun in the next decade, and underground shopping malls are already common in Japan…
分析：很明顯，此段沒有所謂的主題句，而是以 Europe, Canada 以及 Tokyo 為例.在快速看完舉例部分后，我們不難總結(jié)出，舉例的目的是要說明世界各地正著手開發(fā)包括地下城市，地下診所，地下舞廳和地下購物中心在內(nèi)的多樣化地下服務(wù)設(shè)施.而這一觀點(diǎn)正好跟選項(xiàng) Developing underground services around the world 相吻合。
例： There are big advantages, too, when it comes to private homes. A development of 194 houses which would take up 14 hectares of land above ground would occupy 2.7 hectares below it, while the number of roads would be halved… An underground dweller himself, Carpenter has never paid a heating bill …
分析：不難看出，劃線的句子作為本段的首句，具有概括性，實(shí)為主題句。如果正確選項(xiàng)是依據(jù)此句來歸納的話，那理應(yīng)包含 advantages 或是同樣表示優(yōu)勢、優(yōu)點(diǎn)、長處的其它詞?？墒聦?shí)是，所給選項(xiàng)中沒有一項(xiàng)涉及此類詞。單純找主題句看來對于這個(gè)段落已不適用。繼續(xù)往后讀，我們發(fā)現(xiàn)，后面部分其實(shí)是對地下住宅所具備的優(yōu)點(diǎn)的進(jìn)一步舉例解釋。列舉數(shù)字無非是要說明地下住宅節(jié)省土地和空間;而以 Carpenter 這個(gè)地下住宅居住者為例，就是要說明這種住宅既省錢又節(jié)能。由此，答案鎖定為 Demands on space and energy are reduced.
雅思(IELTS)培訓(xùn) 
