“520”是什么？探究这个数字的含义和浪漫
用微信扫码，手机上答题
微信扫码，添加客服
1 . Why is the new device suitable for campers?
A.
It is convenient for the campers.
B.
It takes little time to start the stove.
C.
It costs not more than 80 pounds.
D.
It can charge their laptops quickly.
2 . Which part helps the stove produce the electricity?
A.
The USB port.
B.
The generator.
C.
The fireproof wire.
D.
The power stabilizer.
3 . How does the stove prevent the damaging?
A.
It has 10W power output.
B.
It is made of metal.
C.
It is made of titanium.
D.
It has the stable currents.
4 . How did Khairullin begin his invention?
A.
A Japanese traveler told him.
B.
He was satisfied with charging devices.
C.
He won an inventor's contest.
D.
The stick-burning device inspired him.
