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【简答题】
由一个晶粒组成的晶体称为（），由许多结晶方向不同的晶粒组成的晶体称为（）。
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【简答题】通过抑制胆碱酯酶，产生拟胆碱活性的药物是
【单选题】We learn from the passage that people classify a person into certain type according to ______.
A.
his way of acting and thinking
B.
his way of speaking and behaving
C.
his learning and behavior
D.
his physical appearance and his personality
【简答题】通过抑制胆碱酯酶，产生拟胆碱活性的药物是 查看材料
【单选题】It may be inferred that the author would classify which of the following modes of behavior. as a referential symbol that originally derived from a condensation symbol?
A.
Vocalizing inarticulately in order to express rage without using words
B.
Writing a pictographic character that vaguely resembles a physical object
C.
Flag signaling where the flag movement relies on an existing arbitrary code
D.
The use of right-lane highways by general agreement
E.
Genuflection to indicate one's willingness to serve in a situation
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