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【单选题】
From the first paragraph we can know that______.A.
the author did very well in an aptitude test and because of this he got a promotion
B.
although the author did very well in an aptitude test his job remained unchanged
C.
a lot of people flattered the author and suggested that his job be changed as he did so well in an aptitude test
D.
the author had grudge against his superior for he did not receive a lift in his position
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【单选题】The w e bsite allows you to take a(n)__ t our of the well-known city which was there bout 2000 years ago.
A.
virtue
B.
vital
C.
virtual
D.
v iral
【简答题】第二章(上)成本及成本习性 见PPT第55页混合成本分解
【简答题】Although advanced in years，Thomas Edison remained as active and creative as many young people．
【简答题】科学家选用萌发的普通甜椒的种子搭载“神舟——飞船，应用在微重力和宇宙射线等各种因素作用下生物易发生基因突变的原理，从太空返回后种植得到的植株中选择果实较大的个体，培育出大果实“太空甜椒”。假设果实大小是一对相对性状，且由单基因(D、d)控制的完全显性遗传，请你用原有的纯种小果实普通甜椒和大果实太空甜椒为实验材料，设计一个方案，以鉴别太空甜椒大果实这一性状的基因型。 (1)你的实验设计原理是遵循遗传...
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