choice作为选择可数吗

　　It's the software of choice for business use.

　　这是商务专用软件。

　　Students have a free choice of courses in their final year.

　　学生在最后一学年可以自由选修课程。

　　If I had the choice, I would stop working tomorrow.

　　如果让我选择，我明天就停止工作。

　　Choice is the keynote of the new education policy.

　　新教育政策的主导原则是容许选择。

　　She was the natural choice for the job.

　　做那份工作，她是当然人选。