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        Tens of millions of autos on the road today have crash tested well and feature air bags and antilock brakes, giving the driver a sense of safety on the road. Yet this sense of safety may not be reliable because speed limits have risen and small recreational vehicles like SUVs and MPVs have multiplied.   21   ,people have turned their vehicles into second living rooms where hidden dangers   22   ,from a cell phone on the dashboard to tennis racquets and gold clubs in the back. It's a recipe for     23   because in a crash, any of these objects could   24   a deadly bullet. 
        The automotive industry   25   about this for years. Some companies have tried to warn the consumers in different ways. For instance, in 1986 General Motors engineers in the US were warning that passengers and drivers could sustain serious injuries from unsecured cargo.

【題組】25.
(A) knows
(B) knew
(C) has known
(D) had known


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最佳解!
wanwan 大四上 (2017/04/17)
從整個句子看,後面有"for years" ...


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3F
業精於勤,事立於豫 研一下 (2018/04/26)

The automotive in☆☆☆☆☆☆ __25__ ...



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4F
因音 大四上 (2020/04/28)
看到already或for或since選have+pp
「時態單複數記得變化」
這題主詞單數用單數has
5F
112年已上岸,擺脫爛上司 博二下 (2023/07/05)

The automotive industry has known about this for years. Some companies have tried to warn the consumers in different ways. 
汽車行業多年來已經知道這一點。 一些公司試圖以不同的方式警告消費者。

這題的文法以現在完成式用來描述一個從過去開始並持續到現在的動作。
用 “has/have + 過去分詞” 來構成
know 的過去分詞是 known,所以正確的動詞形式是 has known。

        Tens of mill..-阿摩線上測驗