Solar energy is a long lasting source ..of..energy,and it can be used almost anywhere.To generate solar energy,we only need solar cells and...................! Solar cells can easily be installed on house...............,so we don't need any new space.Compared to other....................sources,they also possess many advantages: wind and water power rely on turbines........................noisy, expensive and which take up large space. Solar cells are totally silent and..................... As they have no moving parts,they require little maintenance and have a long lifetime.ries in the world in the future.
A.use
B.will use
C.will be using
D.will be used
2.People can wear a...................on thier back to fly anywhere easily in the future
A.jet pack
B.flying car
C.teleporter
D.high-speed bicycle
4.In the future most people will travel.........................flying train
A.in
B.at
C.on
D.at
5.Do you think we...........................driverless car in the future?
A.use
B.to use
C.will use
D.have used
6.That pictures is....................
A.us
B.ours
C.our
D.we
7.You can.................................easily on the Dead Sea. Why?-Because it's so salty
A.fly
B.walk
C.drive
D.float
8.Biogas helps solve the problem of indoor.....................
A.noise pollution
B.air pollution
C.water pollution
D.soil pollution