You write the following method (line numbers are included for reference only): You need to ensure that the method extracts a list of URLs that match the following pattern: @ http://(www\.)?([^\.]+)\.com; Which code should you insert at line 07?
正解:D
Explanation/Reference: Explanation: MatchCollection Represents the set of successful matches found by iteratively applying a regular expression pattern to the input string. The collection is immutable (read-only) and has no public constructor. The Regex.Matches method returns a MatchCollection object. List<T>.Add Method Adds an object to the end of the List<T>.