四、深度閱讀

　　十五選五

　　47 N tend

　　48 L negative

　　49 H efficiently

　　50 B associated

　　51 A alert

　　52 J function

　　53 F definitely

　　54 O younger

　　55 E continuing

　　56 G different

　　仔細(xì)閱讀1

　　57 D Interracial lodging may have diverse outcomes

　　58 D Being surrounded by white peers motivates a black student to work harder to succeed

　　59 A Interracial roommates are more likely to fall out

　　60 D The school randomly assigns roommates without regard to race

　　61 A It is unscientific to make generalizations about it without further study

　　仔細(xì)閱讀2

　　B Rates of death from illnesses have risen due to global warming

　　A It was challenged by some climate and risk experts

　　B It is invalid in terms of methodology

　　D Its rough estimates are meant to draw the attention of work leaders

　　D How rich countries can better help poor regions reduce climate hazards