高老师2年前 (2024-03-27)英语阅读（二）(00596)14

We can learn from this passage that self-healing concrete.

A.is a kind ofbacteria that can seal up the cracks ofa bridge

B.is used in building the longest floating bridge in the world

C.will bring about a breakthrough in the construction field

D.will be used in the treatment ofseriously burned skin

正确答案是C