题干
You use_________ to emphasize(强调)that you are referring to(指的是)one thing.
A：successful
B：personal
C：single
答案(点此获取答案解析）
C
You use_________ to emphasize(强调)that you are referring to(指的是)one thing.
A：successful
B：personal
C：single
表示运算x+z﹣（y+w），则
的结果是（ ）