逆城市化
参考答案:
人口和工商业从中心城市向中小城镇转移,城市化地域不断扩大,城市化向农村地域推进,并以中小城镇的分散发展为主,形成城乡一体化。
---Sixteen-year-olds can drive their cars to school?
---No. They shouldn’t ______ to drive their cars to school because are not serious enough.
A.allow
B.allowed
C.Be allowed
D.Have allowed
测定燃油视温度、视密度,用无色透明玻璃制成具有刻度的筒状量器称()。
A.保温盒
B.采样器
C.石油密度计
D.量筒