"In cleaning up an oil spill , straw is an example of a _____
A.sorbent
B.decomposer
C.Chemical agent
D.None of the above
正确答案是A
"In cleaning up an oil spill , straw is an example of a _____
A.sorbent
B.decomposer
C.Chemical agent
D.None of the above
正确答案是A