C.the boundary of Dennis' movement
D.the boundary of the pitch
5. What is Telesensory Systems, Inc. most likely to think about infant Dennis' device?
A.It had better be used by blind children from school age.
B.It needs improving for use in a complicated environment.
C.It may not be so suitable for the blind adults.
D.It benefits blind children in terms of learning.
C
A great invention by an 18yearold high school student grew out of a simple problem most teenagers meet with.
“I'm a teenager and I have a cellphone and my cellphone battery always dies, so I was really looking for a way to improve energy storage,” Eesha Khare said on Tuesday. “That's how I came across supercapacitors.”who graduated from high school last week, won a $50,000 prize on May 17, 2017 at the Intel International Science and Engineering Fair for creating a device that can store enough energy to charge a cellphone in 20 to 30 seconds. ,” Khare said. “The cool thing is that it's a lot thinner than one hair.” but she used it to power a lightemitting diode (LED) in order to show its capability(容量). If used on cellphones, the supercharger would slide on to the phone's battery to charge it in a matter of seconds. The technology isn't available to consumers yet, and it could be years until it is.
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