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【单选题】
一位母亲记录了儿子 岁至 岁的身高，数据如下表，由此建立的身高与年龄的回归模型为 ．用这个模型预测这个孩子 岁时的身高，则正确的叙述是 年龄/岁 3 4 5 6 7 8 9 身高/ 94.8 104.2 108.7 117.8 124.3 130.8 139.0A.
身高一定是
B.
身高在 以上
C.
身高在 左右
D.
身高在 以下
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【判断题】To maintain a professional contact, keep your eyes moving from one to another when speaking to a person.
A.
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B.
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【简答题】A lazy Susan is an addition to a table, which is designed to assist in moving food from one person to another while dining. This is accomplished through the use of a turntable(转盘), which usually moves...
【单选题】The title of the passage implies that
A.
only smart people do exercise．
B.
exercise can be smart or stupid．
C.
exercise keeps the brain strong．
D.
it is fashionable to do exercise．
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