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【简答题】
化学反应有四种：_______、_______、_______和_______。
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反馈参考答案：
举一反三
【单选题】The author offers all of the following ideas as proof that there is no direct correspondence between words and things EXCEPT
A.
Language has other functions than that of reference.
B.
Once a word is grouped into a class, no one-to-one correspondence existsbetween it and what it signifies.
C.
Many words refer to objects that do not exist in the world.
D.
Function words do not refer to objects.
E.
Proper nouns usually refer to unique entities.
【单选题】营养性缺铁性贫血的预防措施不包括:
A.
做好卫生宣教工作
B.
加强孕妇及乳母的营养保健
C.
合理喂养，及时添加富含铁的辅食
D.
早服、多服铁剂以防缺铁
E.
早产儿预防性投药
【单选题】Las coordenadas 0°, 0’, 0’’ corresponden l volcán Cayambe, que está en ...
A.
Bolivia
B.
Perú
C.
Ecuador
【简答题】Di cuáles de los autores de la columna A corresponden a las obras en la columna B
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