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【单选题】
有如下几个结论： ①相关指数 越大，说明残差平方和越小，模型的拟合效果越好； ②回归直线方程： 一定过样本点的中心：（ ； ③残差点比较均匀地落在水平的带状区域中，说明选用的模型比较合适； ④在独立性检验中，若公式 中的 的值越大，说明“两个分类变量有关系”的可能性越强. 其中正确结论的个数有（ ）个.A.
1
B.
3
C.
2
D.
4
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【单选题】— Harry is too thin for his age. — So he is, but ______ he is very healthy.
A.
finally
B.
exactly
C.
eventually
D.
actually
【单选题】He is a very _______ man, I suppose, but he is very dull. [ ]
A.
worthy
B.
worthwhile
C.
worth
D.
worth while
【单选题】Jack is good at English. He is very . But his sister Linda, is weak in English. She is always ______. [ ]
A.
careful careful
B.
careful careless
C.
careless careful
D.
carefully careless
【简答题】Although he is very old, he is very strong. (but/yet二选一）A. yet
【单选题】Is the man's son badly ill?
A.
Yes, he is very iii.
B.
No, he is very common.
C.
Yes, but he can go home.
【简答题】Tom is a schoolboy. He is only seven years old, but he is very busy on weekdays. One Saturday he decided to relax himself, so he went to the cinema. It was the first time for him to do that. He bought...
【简答题】完形填空 Wang Gang is a student. He is very clever, but he is not 1 . His face and hands 2 always dirty (脏的). He washes 3 with water only. Wang Gang 4 an uncle. One day his uncle goes to see him. He 5 Wan...
【简答题】Though he is not rich, but he is very generous.
【单选题】—Do you know the scientist _ Stephen Hawking? —He is a disabled man, but he is very famous and successful. [ ]
A.
call
B.
called
C.
calls
D.
calling
【单选题】5) Which of the following is NOT true of the customer? A) He is a successful man. B) He has received a good education. C) He is rich but very rude. D) He lives in a wealthy neighborhood.
A.
He is a successful man.
B.
He has received a good education.
C.
He is rich but very rude.
D.
He lives in a wealthy neighborhood.
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