在职申硕英语考试

【单选题】The United StatesDepartment of Labor (enforces) laws that (promote) the welfare of wage earners, (improving) occupational conditions and (advance) employment opportunities.
A、enforces
B、promote
C、improving
D、advance
网考网参考答案：C
网考网解析：
应为improve，与promote、advance并列。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>