63.
Your Answer is
Correct Answer is A
Explanation
The subject of the sentence chaos, the predicate verb is, the subject of scientific research are the predicatives of the sentence, as a whole, they cannot be separated by symbols. A is correct.
63.
Your Answer is
Correct Answer is A
Explanation
The subject of the sentence chaos, the predicate verb is, the subject of scientific research are the predicatives of the sentence, as a whole, they cannot be separated by symbols. A is correct.