第88页
A 1-8 echa  bgdf
B 1 Local governments are collecting lots of the city to make our lives much easier
 2 The data can help us save energy and keep the city tidy
第90页
1 F In the future, cities are smaller and more efficient with the help of big data
2 T    3    T
4 F Smart city technology will help prevent traffic jams in the car 
C2 1 There will be fewer traffic jams and more space for you to walk or ride a bike
2 Because drone delivery services are getting more and more popular
3 Yes. It will help to solve some city problems
D1   D2   略
第92页
A1-6 prepare, technology, relax, electronic, mix, while
B 1-11 was walking, were acting, were watching, eete gighting, arrived, was watching, wete making, were standing, were working, left, were watching
第93页 听力 略
第94页
A 1 Uncomfortable, and tired 
   2 Fadt and comfortable
  3 More than 5000 kilometers an hour
  4 Yes. Because they run on electricity
  5 In January 2001. It connects the Pudong International Airport to an underground station much closer to the centre of the city
第95页
1-8 cdba   acaa
第97页
1-9 a bookshop or a library, the Internet, 5000, two million, any place, easy to read, e-encyclopedias, friendly, cheaper
C2 1 I agree. Because we should protect the environment and reduce the use of paper
2 i prefer e-books. Because e-books are easy to take
第98页
1 It will be tidy and bright
2 Thete will be glass outside the house
3 There will be a pool on the roof
4 The temperature of the house will be constant
第99页 作文
   The house in 2050 will be much more different from that of nowadays. It will get its energy from the sun. It will be controlled by computers. It will bewell-ventilayed. There will be glass outside the house. The temperature in it will be automatically adjusted. It will be of intelligent layout. It will be tidy and bright. I hope to live in a wonderful house like this.