A.can be applied to all electronic devices. |
B.uses radio waves to create power. |
C.has replaced conventional batteries. |
D.produces many poisonous chemicals. |
A.makes every use of radio waves. |
B.takes power from usual sources. |
C.reduces our dependency on conventional batteries. |
D.aims at huge commercial benefits. |
A.They have made use of radio waves in their daily life. |
B.They have raised a big fund to support their research. |
C.They have gained a patent for their new technology. |
D.They mainly did their research in their spare time. |
A.Critical. | B.Favorable. |
C.Disapproving. | D.Negative. |
A.A new technique to create power. |
B.A big problem concerning conventional batteries. |
C.Some special sources of power. |
D.The development of power harvesting. |