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【单选题】
He gave up the way of life he had got accustomed to ________ to be independent. [ ]A.
learning
B.
learn
C.
to learn
D.
to learning
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举一反三
【单选题】Eric produces jewelry boxes. If the demand for jewelry boxes is elastic and Eric wants to increase his total revenue, he should
A.
increase the price of his jewelry boxes.
B.
decrease the price of his jewelry boxes.
C.
not change the price of his jewelry boxes.
D.
None of the above answers is correct.
【单选题】You produce jewelry boxes. If the demand for jewelry boxes is elastic and you want to increase your total revenue, you should
A.
increase the price of your jewelry boxes.
B.
decrease the price of your jewelry boxes.
C.
not change the price of your jewelry boxes.
D.
None of the above answers are correct.
【简答题】等温线是指____温度下____与____之间所形成的曲线。等温线分____和____两种吸着等温线。
【单选题】—I want to wear some jewelry (珠宝首饰 ) . —Jewelry? Do you need jewelry? _____ ? [ ]
A.
Why not you wear some flowers
B.
Why don't you wear some flowers
C.
Why don't wear some flowers
D.
How about wear some flowers
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