221. There are 5 in the passage about nanometer(纳米) technology we have just read. Please

发布时间：2020-08-16 07:02:28


221. There are 5      in the passage about nanometer(纳米) technology we have just read. Please tell me the general meaning of the first one.
A. persons
B. paragraphs
C. articles
D. Units

网友回答

A. persons
B. paragraphs
C. articles
D. Units
解析：可联系答.案.网客服索取。
以上问题属网友观点，不代表本站立场，仅供参考！