刑事侦查工作是指公安机关揭露、打击和防范刑事犯罪的一项专门工作。( )
参考答案：对
------Will you have a picnic with your classmates in the park this weekend?.
-------Yes, we may. But ______ .
A．I’m afraid not
B．it’s up to you
C．it depends
D．take your time
He______to get a high position in the company, but failed because of his carelessness.[ ]
A. managed
B. suggested
C. attempted
D. considered
