1. 1. the ancient city 2. art treasures 3
1.the ancient city 2.art treasures 3.the emperors of the Ming and Qing dynasties 4.be turned into a museum 5.be well worth a visit 6.watch the raising of the national flag 7.a garden set in a natural landscape 8.another famous attraction 9.one of the wonders of the world 10.lie on the two sides of the Lijiang River 11.rocks in unusual shapes 12.hang down 13.point upwards 14.the “Art Palace of Nature” 15.run for over 6,000 kilometres across northern China

2. 31.take back to the Earth for further
research
32.be presented with
33.the pride of the whole world
16.become interested in flying 17.take his first flight 18.at the age of 6 19.join the navy 20.serve as a pilot 21.a test pilot 22.test all types of aircraft 23.be chosen to become an astronaut 24.command pilot 25.manage to join two spacecraft together 26.on their way back to the Earth 27.begin spinning out of control 28.receive the order to cut the flight down 29.step out onto the Moon's surface 30.two and a half hours (two hours and a half)

3. BCBBC ADBDC DCCD 单拼 1. Emperors 2. stranger's 3. passengers 4
BCBBC ADBDC DCCD 单拼 1.Emperors 2.stranger's 3.passengers 4.polluted 5.stepped 6.astronaut 7.Pacific 8.southern 9.pride
3.would return
4.is showing
5.was stolen
6.to solve
7.lying
8.rose
9.will hit
10.will be finished
11.have covered
12.has played
13.was walking
14.relaxing
15.will be
discussed
16. visits
ADBAC CDBAA
BDA
1.future's/
tomorrow's
2.think
3.according
4.riding
5.wake
10.highest
11.successful
12.noisier
13.twentieths
14.amazing
15.beauty
16.attractions 动填
1.is produced
2.has ridden

4. 1.Compared with/to your city, our city is less polluted / not so polluted. 2.Jim wondered what cars would be like on Mars in 100 years. 3.No matter whether it rains, a large number of/ large numbers of passengers... 4.The traffic is heavier because of the rapid increase / growth in... 5.Many people are unsure/ not sure whether/ if it is worth the risk... 6.Scientists are always trying to find a planet with/ that has an/ the environment similar to that of the Earth.