2. 外语
  3. The social security system is designed to ______ a basic standard of living for people in financial need.

The social security system is designed to ______ a basic standard of living for people in financial need.

admin2014-03-21  65
问题 The social security system is designed to ______ a basic standard of living for people in financial need.
选项 A、secure
B、keep
C、preserve
D、maintain
答案A
解析 单词secure：保证；获得；使安全；固定。单词keep，preserve，maintain都有保持，维护的意思。这里的上下文都不适宜使用。
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