遇有这种排队等候的情形怎么做？（） A．依次排队等候 B．从右侧借道超越 C．从左侧

As the most ________ spoken language in the world，Chinese is taught in many schools in Europe.

A．frequently

B．properly

C．slightly

D．differently

显晶集合体

下列关于原始大气的说法，不正确的是      [ ]

A．由火山喷发形成       

B．由水蒸气、氨、甲烷、氧气等组成     

C．不含氧              

D．温度比现在的大气温度要高