The word “obscured” in paragraph 4 is closest in meaning to （）.
A.made difficult to know or understand
B.made easy to know or understand
C.made hard to deal with
D.made clear to see
正确答案是A
The word “obscured” in paragraph 4 is closest in meaning to （）.
A.made difficult to know or understand
B.made easy to know or understand
C.made hard to deal with
D.made clear to see
正确答案是A