现有四种说法:①﹣a表示负数;②若|x|=﹣x,则x<0;③绝对值最小的有理数是0;④3×102x2y是5次单项式;其中正确的是[ ]
A.①
B.②
C.③
D.④
答案:C
— ______?
— He's friendly and helpful. [ ]
A. What does he like?
B. What is he like?
C. What is he alike?
D. What is he look like?
下列各项中属于控制环境因素的包括______。
A.诚信和道德观
B.新雇员的入职培训
C.董事会和审计委员会
D.职责划分