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【多选题】
二手资料的获取是开展营销研究工作的第一步，它的优点在于A.
能被快速获取
B.
比起原始资料它的成本要高很多
C.
比起收集原始资料它的成本要低许多
D.
通常情况下它较容易获得
E.
它能辅助现有的原始资料
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Of all the things my grandma used to say, I remember this best of all—everything you worry about will prove to be all right. The underline part can be replaced by ____________.
A.
make waves
B.
unlike
C.
turn out
D.
unique
E.
detailing
【简答题】Of all the things my grandma used to say, I remember this best of all — everything you worry about will ——(词组:结果是,证明是) all right.
【简答题】已知抛物线y 1 =3x 2 ，另一条抛物线y 2 的顶点为（2，5），且形状、大小与y 1 相同，开口方向相反，则抛物线y 2 的表达式为______．
【单选题】My grandma_____in the country. Now she in the city.
A.
used to live, lives
B.
used to living, lived
C.
uses to live, is living
D.
was used to live, lives
【单选题】I remembered my grandma _________ me stories when I was a little child.
A.
used to tell
B.
used to telling
C.
was used to tell
D.
is used to telling
【简答题】( )是稻谷主要成分。
【单选题】— My grandma is used to living in the city. — ______.
A.
So my grandpa is
B.
So is my grandpa
C.
So my grandpa did
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