摘要: [2010·河北唐山市三模]A simple 45-minute operation by scientists is hoped to cure blindness in six years. A. being developed B.developed C. to develop D. developing 76A考查非谓语动词的用法.此处现在分词的被动式作定语.表示动作正在进行.句意:科学家们正在研发的一种简单的45分钟的手术有望在6年后治愈失明.

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