1. 跪求答案.谢谢
请在此输入您的回答
2. 跪求答案,谢谢。
conflict
exchange
built
face up to
realistic
vividly
loosening
ignored
interested
famous
分割线!!!!!
1 D who it is
2 C why
3 B won
4 C weeding
5 C friendship
6 A which
7 B so; that
8 D to learn
9 C take
10 A looking
分割线!!!!
1.Relatively speaking, that is not important.
2. We cannot take on anymore tasks.
3. I have been studying English all the morning, writing and reading.
4. Men who are not married are incomplete.
5. I would like to recommend that hotel to you, its service is very good.
分割线
A brown wallet has been found on the fourth floor of the school. There was cash inside. If you recently lost a wallet, please come to the English Department to identify and claim it.
The English Department
November 20, 2014
3. 跪求答案。谢谢
4. 跪求答案谢谢。
5. 跪求答案。谢谢
6. 跪求答案,谢谢啦
1. C 2. D 3. B 4. D 5. C
6. D 7. D 8. C 9. C 10. B
7. 跪求答案谢谢。
8. 跪求答案。谢谢
(a1+a20)*20/2=98*10=980
第七项的绝对值是25,符号为正号。因此是25
a4=[(-1)^(4+1)] *0.5*(3^4-1)=-1*0.5*80= -40
n的系数2 即为公差
比如a1=2*1-5=-3
a2=2*2-5=-1
公差d=a2-a1=-1-(-3)=2