四象限时间管理法的两个维度是指事情的()
A.战略性和战术性
B.集体性和个人性
C.时间性和紧迫性
D.权威性和重要性
E.重要性和紧迫性
参考答案:E
烧烤是很多同学喜爱的小吃,露天烧烤的肉类中含有苯并芘(C20H12)等强致癌物质,过多食用会危害人体健康的.试计算
(1)苯并芘的相对分子质量是______;
(2)苯并芘中碳元素与氢元素的质量比是______.
It was _______ he does _______ makes his students enthusiastic about school. (原创)
A.that; that
B.what; what
C.that; what
D.what; that