What appliances can make us enjoy the smart life?
A. Smart phones
B. Sweeping robots
C. intelligent furniture
D. All of the above
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According to Katie, what can help us to see an feel everything in the virtual world?
AR glasses
B. Robot fish
C. Flying robot
D. Robosapien
How do the people in London go to work or school?
A. bus
B. underground light railway
C. taxi
D. all of the above
How many buildings of various architectural styles are housed by the Bund?
A. 52
B. 42
C. 46
D. 50
When should you apply for the visa before the trip?
A. at least 4 or 6 weeks before the trip
B. at least 1 or 2 weeks before the trip
C. at least 5 or 7 weeks before the trip
D. at least 3 or 4 weeks before the trip
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