問題詳情

5. 由 3x2-8x+k=0 可推得 x- 

=±

 ,則 k= E 。

參考答案

答案:D
難度:簡單0.713846
統計:A(4),B(38),C(17),D(232),E(0)

用户評論

曾凱洛】評論

No sooner....than   一...就No sooner had I left for school at 7:30 than it started to rain.= It started to rain just after I left for school at 7:30.

Heidi Lin】評論

As soon as 、 No sooner than 、 Hardly when 、 Scarcely before的使用:As soon as 前後皆是過去式,其他三者片語前句要用過去完成式(had+pp),後句要用過去式。1. 他一見到我就抱我As soon as :He hugged me as soon as he saw me.No sooner than:He had seen me no sooner than he hugged me.He had no sooner seen me than he hugged me.(副詞置中)No sooner he had seen me than he hugged me.(倒裝)Hardly when:He had seen me hardly when he hugged me.He had hardly seen me when he hugged me.(副詞置中)Hardly had he seen me when he hugged me.(倒裝)Scarcely before:He had seen me scarcely before he hugged me.He had scarcel...