I hate to see papers _______ in pencil. A. writing B. to write C. written D. write
I had hardly sat down _______ he stepped in. A. when B. that C. until D. after
There wouldn’t be enough water for us if we didn’t _________. A. turn to the oceans for more waterB. reuse used water and make use of seawater C. desalt seawater D. take steps to reuse all water on earth
李教授说:与矿泉水相比,纯净水缺少人体所必须的某些矿物质。所以,经常饮用纯净水的人会缺乏这些矿物质。 以下哪项最能削弱李教授的论证? A.矿物质过多也会危害健康。 B.人体缺乏一些矿物质并不会危害健康。 C.人们可以从其它食品中得到这些矿物质。 D.有些人既饮用纯净水也饮用矿泉水。 E.饮用什么样的水取决于人们的生活习惯。