标准化公式为。()
参考答案:对
Some people would rather ride bicycles as bicycle riding has _____of the trouble of taking buses.
A.nothing
B.none
C.some
D.neither
我国公民身份证号码前6位是()代码。
A、城市代码
B、行政区域代码
C、地区代码
D、国家代码