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【简答题】
分子中即含有 基又含有 羧基 基的化合物称为氨基酸。
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反馈参考答案：
举一反三
【简答题】中国经济体制改革的目标是什么?
【单选题】I prefer clothes which are made out of natural materials, ______cotton and wool.
A.
as
B.
such as
C.
like
D.
just like
【单选题】The preservation of natural resources is very important as some raw materials are ______ scarce and limited.
A.
primarily
B.
sufficiently
C.
precisely
D.
exceedingly
【单选题】Built ______ natural materials, the houses are believed to be warm, comfortable and friendly places to live.
A.
from
B.
with
C.
by
D.
in
【多选题】核仁( necleolus )
A.
见于间期的细胞核内
B.
增殖较快的细胞有较大和数目较多的核仁
C.
功能是组装核糖体
D.
rRNA 的合成位于纤维中心（ FC ）与致密纤维中心（ DFC ）的交界处
【单选题】It is indicated that materials stronger than natural silk can be expected in the furore. 查看材料
A.
Right
B.
Wrong
C.
Not mentioned
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