语法填空
阅读下面短文, 按照句子结构的语法性和上下文连贯的要求, 在空格处填入一个适当的词或
使用括号中词语的正确形式填空.
An American inventor, Dean Kamen, says he has invented the worlds first selfbalancing individual
transport vehicle, __1__ is called the Segway Human Transporter.The Segway looks like a long stick
__2__ two wheels.The stick has handles for a person __3__(hold)．The wheels are connected by a
platform.The person stands on the platform and holds __4__ handles.The vehicle moves forward or
backward __5__ the person moves his body in that direction.The driver turns the handles __6__(go)
left or right.The Segway has computers and gyroscope devices to make __7__ move and balance.It is
powered by batteries that can be recharged in a few hours by __8__(use) an electric outlet.It can travel
at a speed of nineteen kilometers per hour.It costs less than ten cents a day to operate.It does not
produce pollution.Mister Kamen says the Segway could replace cars in __9__(crowd)city centers.He
says it was designed to reduce pollution and solve other __10__(environment)problems in cities.
However, it was not designed to travel on roads.