单选题
The first and essential step in the study of any language is observing and ______ pre cisely what happens when native speakers speak it.
A、
setting down
B、
setting out
C、
putting across
D、
putting away
【正确答案】
A
【答案解析】
set down写下，记下。set out出发，动身。put across欺骗，哄骗。put away把…收拾好。
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