30.The researchers are more and more the environmental pollution._英语解答

30.The researchers are more and more the environmental pollution.
30.The researchers are more and more () the environmental pollution.
A.involved in
B.concerned about
C.conducted against
D.dealt with

人气：395 ℃　时间：2020-04-06 04:57:53

解答

B 涉及的意思关心