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【单选题】
是一定社会或阶级的道德原则在个人身上的体现与凝结,是人们在处理个人与他人、个人与社会关系的一系列行为上所表现出来的比较稳定的道德倾向和特征。A.
道德情感
B.
道德行为
C.
道德品质
D.
道德修养
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举一反三
【单选题】水的离子积常数是在一定的温度下（）。
A.
氢离子与氢氧根的乘积
B.
[氢离子]与[氢氧根]的乘积
C.
[氢离子]与[氢氧根]的乘积与[水]之比
D.
氢离子与氢氧根的乘积与水之比
【单选题】Would you be kind enough_____me how to go to the office?
A.
as to tell
B.
to tell
C.
telling
D.
tell
【单选题】Text 3 A recent study demonstrated how powerful a few words can be：Forty competitive tennis players were shown digital images of balls coming their way．Just before each ball appeared，the players saw o...
A.
excellent performance often goes with well-trained players
B.
excellent performance often goes with positive comments
C.
high-tech methods help players avoid unforced errors
D.
high-tech methods increase players’competitiveness
【简答题】It’s not easy to be an astronaut’s son . Everybody expects you to be special or perfect . I often wonder how my father ever had a son like me . I mean he’s so special and so good at everything he does...
【简答题】某温度下，测得 氢氧化钠的PH=11水的离子积常数K W 是多少？ （1）该温度下，水的离子积常数K W 是多少？ （2）在此温度下，将pH=a的NaOH溶液V a L与pH=b的硫酸V b L混合。 ①若所得混合溶液为中性，且a=12，b=2，则V a : V b 为多少？ ②若所得混合溶液为中性，且a+b=12，则V a : V b 为多少？
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