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【单选题】
元素周期表中第一与第二过渡系元素性质的差异大于第二与第三过渡系元素性质的差异,主要是由于( )A.
惰性电子对效应
B.
价电子构型相似
C.
它们都是金属元素
D.
镧系收缩的影响
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反馈参考答案：
举一反三
【简答题】John s______ an arm from bed to pick up his phone. Sleepily he asked, “Who is it?”
【简答题】John ______ out an arm from bed to pick up his phone. Sleepily he asked, “Who is it?”
【单选题】John ______ out an arm from bed to pick up his phone. Sleepily he asked, “Who is it?”
A.
extended
B.
stretched
C.
flooded
【单选题】John ___ an arm from bed to pick up his phone. Sleepily he asked, “Who is it?”
A.
stretched out
B.
was flooded with
C.
made up for
D.
was destined
【简答题】John out an arm from bed tpick up his phone. Sleepily he asked "Who is it?"
【简答题】人工合成培养基只能维持细胞生存，但还需补充一定量的天然培养基（ ）。
【单选题】John _____an arm from bed to pick up his phone. Sleepily he asked, “Who is it?”
A.
spotted
B.
stretched out
C.
found
D.
grabbed
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