问题
判断题
80氮气的密度为1.254Kg/m3，分子量为28，氮在空气中约占78.1%。
答案
参考答案：对
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80氮气的密度为1.254Kg/m3，分子量为28，氮在空气中约占78.1%。
参考答案：对
Passage Two
The function of literary artist is to ______.
A．communicate with the reader
B．carry on the business of life
C．provide a knot and stitch
D．present his ideas attractively