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【单选题】
病人张某,女,40岁,右眼视物模糊进行性加重三年,患高度近视眼二十年。检查 右眼视力0.1,晶状体混浊,浑浊部位位于晶状体核。血糖正常。 诊断为:A.
年龄相关性白内障
B.
并发性白内障
C.
先天性白内障
D.
先天性白内障
E.
糖尿病性白内障
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【简答题】若等差数列 的前 项和为 ，若 ，则 _________．
【简答题】若等差数列 满足 ， ，则公差 ______； ______．
【简答题】等差数列 中，若 , ，则 .
【简答题】若数列 为等差数列， ， ，则 .
【简答题】wholesale _____
【单选题】wholesale
A.
a company or a person that provides a particular type of product
B.
a person who tried to be more successful than you
C.
time when the seller repairs or replaces a product free of charge
D.
the selling of goods to the public,usually through shops
E.
the selling of goods to businesses,usually in large quantities
F.
help,advice or free repair that you get after you buy a product
【简答题】等差数列 前 项和 ，若 ，则 __________.
【简答题】已知{ }为等差数列，若 ， ,则 ________.
【简答题】启动 Photoshop CS6 软件,简述其工作界面分别由 ______ 、 ______ 、 ______ 、 ______、 ______ 部分构成?
【单选题】Which of the following statements about the wholesale and agency models for selling books is not true?
A.
In the wholesale model, the retailer decides at what price to sell a book to the consumer.
B.
Amazon surprised traditional publishers by selling e-books for below their wholesale cost.
C.
Amazon supports the agency model.
D.
A result of the agency model was that Amazon's prices on e-books rose.
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