A.Satellites | B.Receivers |
C.Global Positioning System | D.Underwater Robot |
A.It has carried people to other planets. |
B.It will provide a longlasting lab for us. |
C.Russian and American scientists are working for it. |
D.Humans will get a lot of advantages from it. |
A.save lives in the sea |
B.take pictures in the sea |
C.repair the broken ships |
D.look for the ancient ships in the sea |
A.the use of GPS is affected by the weather conditions |
B.it's very important for us to learn about new technology |
C.it's easy for us to catch up with all the new inventions |
D.technology brings us many advantages such as cloning humans |
A.To help us study some new technology. |
B.To tell us technology is changing the world. |
C.To help solve the problems that technology causes. |
D.To remind us the advantages of technology are limitless. |