每日一题

Writing>Identifying Sentence Errors

The following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct.If the sentence contains no error, select choice E.

Besides conserving forest resources, recycling produces fewer pollutants than does the conventional pulping and bleaching processes that are normally used to create paper. No error.

(A) conserving
(B) than does
(C) that
(D) to create
(E) No error

答案和解析

答案：B

解析：

The error in this sentence occurs at (B), where there is subject-verb disagreement. The singular verb "does" does not agree with the plural noun "processes." The plural verb "do" is needed instead.