课后作业I.选词填空berelatedto;unlikelyto;adaptto;nolonger;inorderto;toomuch;dieout;cutoff;comestraighttothepoint;throwlighton1.Hetriedallhisbesttotheproblembutthechildrencouldn’tunderstandhim.2
课后作业
I.选词填空
be related to;unlikely to;adapt to;no longer;in order to;too much;die out;cut off;come straight to the point;throw light on
1. He tried all his best to____ the problem but the children couldn’t understand him.
2. If you don't pay the electricity bill in time the electricity supply will be____ .
3. There's little time left; let's____ .
4. The young man is so lazy that he is____ achieve the goal.
5. To our disappointment the man ____ works in the company.
6. He practised hard ____ perform better in the basketball match.
7. Can you say some other words which ____ this word?
8. If people don't pay attention to the protection of rare animals they will soon____ .
9. Generally speaking children are easy to ____ changes in their life.
10. Every weekend we always have____ house- work to do.
线性代数的一个填空题,设A是m×n矩阵,B是n×m矩阵,E是n阶单位矩阵(m>n),已知BA=E, 2020-05-13 …
求解lim(n,+∞>1/n*(e^1/n+e^2/n+…+e^n/n)求详细解题过程谢谢求解li 2020-05-14 …
1.计算说明在北京(40°N)观测北极星的高度是多少?2.设地球半径6370km,A、B两点经纬度 2020-05-16 …
矩阵(E+A)^n等于什么?看到一个二阶的矩阵n次方=E^n+n(E)^(n-1)A,三阶的n次方 2020-06-12 …
lim(x趋于0时)[(e^x+e^2x+e^3x+……e^nx)/n]^(1/x)的极限;我自己 2020-06-12 …
请问下面的经纬度数分别是哪些城市?107°E,6°S.96°E,17°N.90°E,23.5°N. 2020-07-03 …
欧氏空间可数点集问题,请教E是N维欧氏空间Rn中的点集,且E中任意两点之间的距离都是有理数.证明: 2020-07-30 …
求助:X~N(0,1),如何求E(X^2),E(X^4),E(X^n)X~N(0,1),如何求E( 2020-08-02 …
求证e^i(4π/n)+e^i(8π/n)+...+e^i4(n-1)π/n+e^i(4nπ/n)= 2020-11-01 …
limn→+00,e的n分之1次方*(1-e)除以n*(1-e的n分之1次方)=e-1是怎么算来的? 2020-12-17 …