A Number of Issues的用法和样例：
- The law is behind the times on a number of important issues.
- It noted that a number of issues dated back to the previous IIM meetings.
- Currently, the focus of market attention seems to be on a number of issues.
- A number of new hats were on parade at the wedding.
- A number of satellites are now circling the earth.
- I seriously question a number of your assertions.