1.A【解析】设f(x)=x■.则f(3)=3”=27,解得m=3,则f(x)=x3,故f(2)=8. 2.D【解析】(a7-a-)2=a十a1-2=4,所以aT-a-寸=±2.

l.A细节理解题。根据Paris部分中的But whattravelers really love are the old-fashioned cafes,livelymarkets and trendy shopping districts.可知，巴黎是购物...

L.A细节理解题。由Camel Trail中With the highestnumber of excellent reviews on TripAdvisor and 96%traffic free,we're certain you'll have a great time,可...

l.A细节理解题，根据Personalized Day Tour in theNetherlands部分第一句Gain close insight into theNetherlands'artistic works on this private walk tourfro...

l.B细节理解题。根据第二段Racing is simple..和第三Dog sledding is one of the fastest growing sports onthe east coast of Australia.和第四段Participantsc...

一、选泽澳7.01.B【解析】因为(1一i)(1一x)=1十i,所以1一之=(1+i)21+2i-1(1-i)(1+i)2=i,所以：=1-i,所以之=1十i,所以：的虚部为1. 2.A【解析】因为a⊥b,所以a·...

l.B细节理解题。根据Hello English一Best app formiddle learners部分中的If you already understand thebasics but want to improve your English,this app is...

l.C细节理解题。根据David Sheldrick Wildlife Trust中Dr.Dame Daphne Sheldrick started the organizationin 1977 in memory of her late husband,the famousna...

l.D细节理解题。根据第二段中Another big attractionis Derren Brown's Ghost Train.a high-tech version ofthe fairground rides that terrified generations o...

一、匹竿1.C【解析】杂交实验中人工异花授粉过程为：去维（在花蕾期去掉雄蕊)→套上纸袋→人工异花授粉（待雌蕊成熟时，采集另一株植株的花粉，撒在去雄蕊的雌蕊柱...