What are the purpose of reading comprehension according to the video ？

A.Grasp the main idea of a paragraph which is the point of the passage， minus all the details.

B.The reader must be able to translate the written words into meaningful language.

C.Looking for the key idea in a sentence， which is of crucial importance to comprehension of the whole passage.

正确答案：Grasp the main idea of a paragraph which is the point of the passage， minus all the details.The reader must be able to translate the written words into meaningful language.Looking for the key idea in a sentence， which is of crucial importance to comprehension of the whole passage.