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【简答题】
短周期元素A、B、C、D在周期表中的位置如下图所示,回答下列问题: A B C D (1)设A、B、C、D四种元素的原子序数之和为M,则M____________。 A.必为奇数      B.必为偶数    C.可能为奇数,也可能为偶数 (2)若D是地壳中含量位居第二的元素,其单质是制造太阳能电池板的关键材料,其氧化物在数据传输方面贡献突出,则: ①D的元素符号为____________; ②B形成的一种单质分子(甲)可以和钾“掺杂” 在一起制造出化合物乙,其晶胞如右图所示,则该晶 体中甲分子和钾原子的个数比为 ; (3)若D元素原子的次外层电子数等于其它各层电子数之和,则: ①用电子式表示D元素氢化物的形成过程 ; ②过量A元素的氢化物与D元素最高价氧化物对应水化物反应生成化合物Z,则 Z的水溶液中所有离子的浓度由大到小的顺序为 ; ③用上述某元素的氢化物X与另一元素的氧化物Y反应,可生成一种强酸,则X、Y可能为: 和____,或____和____(填分子式)。
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举一反三
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A.
is expecting
B.
has expected
C.
is expected
D.
will
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【判断题】Posting godds issue will create one FI document.
A.
正确
B.
错误
【单选题】In terms of specification, which of the following statements about nominal definitions is FALSE?
A.
Nominal definitions do not claim that the definition represents a “real” entity.
B.
Nominal definitions typically represent some consensus about how a term is used.
C.
Nominal definitions specify precisely how a concept will be measured.
D.
Nominal definitions assign a definition to a concept.
E.
Nominal definitions are arbitrary.
【判断题】Posting goods issue will create one FI document.
A.
正确
B.
错误
【简答题】名义利率(nominal interest rate)
【简答题】名义利率(nominal interest rate)
【单选题】About one fourth of the families in the city have private cars and this number _____ to double in five years.
A.
is expecting
B.
has expected
C.
is expected
D.
will expect
【单选题】非礼勿视,非礼勿听,非礼勿言,非礼勿动,是谁提出的。
A.
孔子
B.
孟子
C.
荀子
D.
老子
【简答题】Recently he __________ every night until after one o' clock, preparing for the final exam. A) shows up B) show off C) stays in D) stays up
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