题干
Jack is dishonest. He always some excuses for doing something wrong.
A：makes up
B：sets up
C：takes up
D：picks up
答案(点此获取答案解析）
A
Jack is dishonest. He always some excuses for doing something wrong.
A：makes up
B：sets up
C：takes up
D：picks up
，则
的定义域为 （ ）
的解集是（ ）