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【单选题】
引起甲状腺功能减退的主要原因是A.
甲状腺激素分泌过多
B.
甲状腺激素分泌过少
C.
食用海产品过多
D.
食物中碘过多
E.
甲状腺肿瘤
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【单选题】The _____ kids learn to be independent, the better it is for their future.
A.
later
B.
latest
C.
earlier
D.
earliest
【简答题】Envy the kids at school who are smarter than you and seem to learn more quickly? Don’t worry． 1____________________ 2. _______________ However, according to a recent study, IQ can rise—not jus...
【单选题】In order to improve communications with kids, parents should ______.
A.
learn more about the modern techniques and try to adjust all of them
B.
learn to use modern ways to communicate with kids, such as texting messages
C.
try to share some modern and meaningful computer games with kids
D.
earn enough money to buy modern machines for kids to satisfy their needs
【单选题】Barry Schwartz argues that ______.
A.
pay-to-learn plan should target kids who feel no love for learning
B.
children who get paid to learn should be followed through life
C.
paying kids to learn diminishes their interests in learning
D.
profiting isn't what kids study for in schools
【单选题】已知电极反应 MnO 4 - + 8H + +5e - Mn 2+ + 4H 2 O , φ y ( MnO 4 - / Mn 2+ ) = 1.51V ,求当 c ( H + ) = 0.1 mol·L -1 , c ( MnO 4 - ) = c ( Mn 2+ ) =0.5 mol·L -1 时, φ ( MnO 4 - / Mn 2+ ) 为( )。
A.
1.32 V
B.
1.42 V
C.
1.45 V
D.
1.52 V
【简答题】Jealous of the kids at school who are smarter than you and seem to learn more quickly? Don’t worry． 71 72 However, according to a recent study, IQ can rise—not just by one or two points, but by as man...
【简答题】电极反应 MnO 4 - + 8H + + 5e - = Mn 2+ + 4H 2 O 。已知 φ Θ ( MnO 4 - /Mn 2+ ) = 1.507 V , 若 c ( MnO 4 - ) = c (Mn 2+ ) = 1 mol∙L -1 , 当 H + 浓度为 10 mol∙L -1 时的电极电势为 ___。
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