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【多选题】
x为0 1.1 2.1 2.8 4.2 5.0 6.1 6.9 8.1 9 9.9时,y分别为10 11 13 14 17 18 22 24 29 34 39。请用4次多项式拟合数据,其拟合的常数项和相关系数分别是?A.
9.88862
B.
0.99834
C.
10.53111
D.
0.99573
E.
9.98172
F.
0.99793
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反馈参考答案：
举一反三
【单选题】If a computer crashes，you will lose the file you _____ on if you don’t save it early enough.
A.
are working
B.
work
C.
will work
D.
worked
【单选题】If a computer crashes, you will lose the file you ______ on if you don't save it early enough. [ ]
A.
work
B.
are working
C.
will work
D.
worked
【简答题】(2019 省第四联考 ) Now the air in our
city is ______ th a n it used t o be . Something must be done
to stop it.A. v ery goo d B. much better C. rather bad D. e ven worse
【简答题】If you can't get up early, newspaper ___1____ is not a suitable job for you. If you can't get up early, it’s not suitable for you to ___2___ newspaper.
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