What is the purpose of the letterTo sale ______.
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I must remember (take) ______ my textbook with me.
The foreigner tried his best, but he still couldn’t make his point (understand) ______.
I (keep) ______ up correspondence with him since he went abroad.
羚羊角入汤剂应
A. 先煎
B. 包煎
C. 不宜久煎
D. 另煎
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