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【单选题】
清人在《幽梦影》中说：“少年读书，如隙中窥月；中年读书，如庭中望月；老年读书，如台上玩月，皆以阅历之浅深，为所得之浅深耳”。所言蕴含的哲理是（）。A.
事物之间的联系是客观的
B.
矛盾的特殊性中包含有普遍性
C.
事物的发展都遵循一定的规律
D.
任何事物都有现象与本质之分
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皮皮学刷刷变学霸
举一反三
【单选题】If the cross-price elasticity between two goods is negative, the two goods are likely to be
A.
luxuries.
B.
necessities.
C.
complements.
D.
substitutes.
【简答题】常见的托盘有 ( )、不锈钢托盘、( )、 木质托盘等。
【单选题】Two goods are complements if the:
A.
price elasticity of each is greater than one.
B.
income elasticity of each is negative.
C.
cross-price elasticity is negative.
D.
cross-price elasticity is positive.
【单选题】The difference between the control group and the experimental group was______.
A.
the training that parents received
B.
the age of the children
C.
the books that were read
D.
the number of the children
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