What are the inventors doing in the lab? ( )(本题2.5分)
A. Replacing carbon fibers with shrilk.
B. Testing ahrilk.s use in wet conditions.
C. Making shrilk out of used household goods.
D. Improving shrilk.s flexibility for medical purposes.
出自:平顶山学院-英语(专升本)-报刊阅读(专升本)