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【简答题】
合成甲醇反应的特点是什么?
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【简答题】今有一画线实验，标准线分别为5cm及10cm，实验结果5cm组的误差平均数为1.3cm，标准差为0.7cm，10cm组的误差平均数为4.3cm，标准差为1.2cm，请问用什么方法比较其离散程度的大小?并具体比较之。
【单选题】Why does Atticus choose to represent Tom Robinson even though he knows he will lose the trial?
A.
He wants to change the attitudes of the jury towards black people .
B.
He thinks it ’ s the right thing to do.
C.
He wants to get a reasonable chance on appeal .
D.
He wants to prove his ability to his children.
【简答题】如图，图中相邻两边互相垂直，该图形的周长为______．
【简答题】如图，图中相邻两边互相垂直，该图形的周长为（ ）
【简答题】第三部分阅读理解（共20小题；每小题2分，满分40分） 阅读下列短文，从每题所给的四个选项（A、B、C和0）中，选出最佳选项，并在答题卡上将该项涂黑。 It’s always awkward when you meet someone from a different country．You never know whether to shake hands, bow or even whethe...
【简答题】Question 49. How does Martin Reimann interpret his finding? ==== Passage 10 ==== The secret to eating less and being happy about it may have been cracked years ago—by McDonald's. According to a new st...
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