36. The United States Social Security Act, enacted in 1935, contained three major programs a retirement fund, unemployment insurance, and welfare grants for local distribute.
这道题的答案我知道,是distribute错了。应该改成distribution.
但是,我很困惑:这三个并列成分:
a retirement fund
unemployment insurance
welfare grants
为什么(1)单复数不统一; (2)为什么同样是单数, retirement fund前面需要a, 而unemployment insurance 不需要呢?
请NN解惑!谢谢!!!
举报
1.可以单复数不统一: I have one apple and two peaches.
2. unemployment insurance 失业保险
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