【Diana Hsu】評論

in which = where, at which,by which, about which, are closely meanings to "that."

【許履新】評論

為什麼選D用at？

【Smilly He】評論

rate - 速度，速率The car was going at the rate of 60 miles an hour .   汽車以每小時六十英里的速度行駛。

【皮卡皮卡】評論

grow at 有可观的增长;有不俗的增长率    group trading system 集体贸易制度 | grow at a respectable pace 有可观的增长;有不俗的增长率

【還再游ㄥ( • ̀ω•́】評論

補充一下，這題應該是考 「at the rate 」這個片語+搭配關係代名詞1.原句拆成兩句：Market growth is the rate.the overall market is growing at the rate.2.「at the rate」-->以什麼樣的比率，介系詞用『at』3.上兩句拼再一起：Market growth is the rate which the overall market is growing at.(這裡的which 為受格=that可省略，主是要講市場成長比率這件事）然後在變化一下，把介系詞「at」提到關代which前面（不可省略），就變成：Market growth is the rate at which the overall market is growing.大概是這樣，如有錯誤請再糾...