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【简答题】
有A、B、C、D、E五种短周期元素，已知A、B、C三种元素的原子序数越来越大，在周期表中A、B同族，B、C为同周期相邻元素，这三种元素的原子核外电子数之和是41，D元素的质子数介于A、B之间，它在空气中燃烧生成淡黄色固体，E元素的原子核内中子数比质子数多1个，0.9 g E单质与足量稀盐酸反应生成0.1 g氢气，并转化为E 3+ ,试回答： （1）写出元素符号A 、B 、C 、D的离子结构示意图 、E在周期表中的位置是 ；C单质的电子式为 （2）用电子式表示B与D形成的化合物的过程： （3）D在空气中燃烧的化学方程式 （4）写出D、E的最高价氧化物对应水化物间反应的离子方程式：
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【单选题】Why is the mother of the narrator almost cry from joy when seeing the sceneries?
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Because they remind her of her lost husband
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Because they are painted by her husband
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Because they are cheap
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【单选题】When the narrator went back to her room, she______.
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laughed in triumph at her victory
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felt her hunger was satisfied
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they grow anxious and pessimistic about their future.
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they become ambitious
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they are possessed by the desire to get up in the world
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To review for an upcoming test.
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To review material from an earlier lecture.
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【单选题】When the narrator was young, ___________.
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he used to toss all the coins he had into a pickle jar
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his father used to save all the coins he had
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【单选题】Which of the following is true when the narrator watched the TV program about the cathedral?
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The blind man was falling asleep.
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The blind man was listening to the program.
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The blind man asked the narrator to tell him what was on TV.
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The blind man was talking to the narrator ' s wife.
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【单选题】The experience the narrator had when winning the class oratorical competition made her realize that______.
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she was perhaps to be blamed for her loneliness
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her classmates really didn't like her at all
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there was a lot of prejudice against Indians
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it was very easy to win an oratorical contest
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【单选题】When the narrator was young, ___________.
A.
he used to toss all the coins he had into a pickle jar
B.
he used to like making sounds dropping coins into a pickle jar
C.
his father used to save all the coins he had
D.
his father used to give him all the coins he had
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【单选题】When the narrator went back to her room, she______.
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【多选题】In “The Egg”, what has happened to the young couple, when the narrator is born into the world?
A.
they grow anxious and pessimistic about their future.
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A.
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B.
To review material from an earlier lecture.
C.
To go over a homework assignment.
D.
To introduce points related to a new course.
查看完整题目与答案
【单选题】When the narrator was young, ___________.
A.
he used to toss all the coins he had into a pickle jar
B.
he used to like making sounds by dropping coins into a pickle jar
C.
his father used to save all the coins he had
D.
his father used to give him all the coins he had
查看完整题目与答案
【单选题】Which of the following is true when the narrator watched the TV program about the cathedral?
A.
The blind man was falling asleep.
B.
The blind man was listening to the program.
C.
The blind man asked the narrator to tell him what was on TV.
D.
The blind man was talking to the narrator ' s wife.
查看完整题目与答案
【单选题】The experience the narrator had when winning the class oratorical competition made her realize that______.
A.
she was perhaps to be blamed for her loneliness
B.
her classmates really didn't like her at all
C.
there was a lot of prejudice against Indians
D.
it was very easy to win an oratorical contest
查看完整题目与答案
【单选题】When the narrator was young, ___________.
A.
he used to toss all the coins he had into a pickle jar
B.
he used to like making sounds dropping coins into a pickle jar
C.
his father used to save all the coins he had
D.
his father used to give him all the coins he had
查看完整题目与答案