That Social Security payments will be a burden comes from the concern that ______.
A.elderly people ask for more money B.the program discourages working people C.the number of elderly people is growing D.younger people do not want to work.
Đáp án đúng: C Giải chi tiết:Đáp án là C. Trong câu: “Recently, there has been concern that the Social Security fund may not have enough money to fulfill its obligations in the 21st century (=Social Security payments will be a burden) , when the population of elderly Americans is expected to increase dramatically (= the number of elderly people is growing).