Scientistshavecreatedtheworld'ssmallest“snowman”,

問題詳情：

 Scientists have created the world's smallest “snowman”, _______ about a fifth of the width of a human hair.

  A. measuring        B. measures           C. measured         D. to measure

【回答】

 A

知識點：非謂語動詞

題型：選擇題