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【多选题】
下列属于油脂的化合物为( )A.
猪油
B.
花生油
C.
牛油
D.
肥皂
E.
豆油
F.
CE
G.
分子中如含有较多的低级脂肪酸和不饱和的高级脂肪酸成分，说法不正确的是（ ）
H.
不易被空气氧化
I.
常温是液态
J.
难溶于水，易溶于有机溶剂 K. 便于储藏运输 L. 难溶于水，易溶于有机溶剂
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举一反三
【单选题】The description of the first paragraph is to______.
A.
prove the importance of food
B.
introduce the discussion of food
C.
introduce the topic of street dining
D.
show the busy scene of London life
【单选题】This passage is probably taken from the ______ of an English text book.
A.
contents
B.
introduction
C.
first chapter
D.
index (索引)
【单选题】The overall purpose of the passage is to______.
A.
describe the British as shoppers
B.
introduce shopping places in London
C.
show how the British have changed from shopkeepers to shoppers
D.
indicate the British are better at doing business than other people
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