大学英语大学英语大学英语三级(CET3)阅读理解与翻译
题目内容

Which of the following is NOT true about spider silk、

2024-07-09

A.Scientists spent decades studying spider silk.

B.Kevlar is the toughest spider silk on earth.

C.Some spider silk fibers are much stronger than man-made materials.

D.Spider silk is an amazing organic material.

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