The UC’s governing body, the Board of Regents, voted 23-0 Thursday to approve a proposal by the UC president, Janet Na

问题详情

The UC’s governing body, the Board of Regents, voted 23-0 Thursday to approve a proposal by the UC president, Janet Napolitano, that phases the tests out over five years, at which point the UC aims to have developed its own test。老师这个point是动词哈，指出的意思吗，还有at which如果是介词提前定语从句，但是这样point就没有主语。所以这个是做什么成分？

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老师回复问题

at which point是指在这个时刻，不是动词