答案：D测试点：同位语。分析：逗号前为句子，逗号后应是从句或短语。(A

答案：D测试点：同位语。分析：逗号前为句子，逗号后应是从句或短语。(A)(B)(C)均不能与空格后的成份构成完整的从句，故选(D)构成名词短语，说明宾语the Perkins School for the Blind是什么。

Kết quả (Anh) 1:

Answer: d test points: appositives. Analysis: before comma sentences, clauses or phrases should be after the comma. (A) (B) (C) are not allowed and the composition of space form a complete clause, select (d) constitutes a noun phrase, indicating what is the object of the Perkins School for the Blind.

Kết quả (Anh) 2:

Answer: D test point: appositive. Analysis: comma before the sentence, after the comma should be clauses or phrases. (A) (B) (C) can not constitute the components of space after a complete clause, so choose (D) constituting the noun phrase, indicating what object the Perkins School for the Blind is.

Kết quả (Anh) 3:

Answer: D test: 2. Analysis: comma before the sentence, after the comma should be a clause or phrase. (A) (B) (C) can not be with the composition of the composition of the complete clause, so choose (D) constitute a noun phrase, the object Perkins School for the Blind the what is the.