听力原文:(A) The teacher is checking her student's spelling. (B) The teacher is using a chalk with her right hand. (C) The teacher is a left-hander and she is drawing a graph on the blackboard. (D) The teacher writes from the left to the right.
A.
B.
C.
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举一反三
【简答题】4 What are the three stages of learning a foreign language according to the speaker?
【判断题】Of the three forms of international business, foreign investment provides the firm with the most involvement, and perhaps the greatest risk, abroad.