填空题 Because the problem of aging still remains a myth, some workplace bosses are uncertain a bout whether hiring older workers is 1.

  • 1、
【正确答案】 1、a sound investment    
【答案解析】[解析] 在第五题中提到了workplace supervisors也就是本句中所说的workplace bosses，在第五段中间位置myths about aging…workplace supervisors...a sound investment，可得到本题的答案。