美語發音與聽說方法精講的給分高嗎

美語發音與聽說方法精講的給分高嗎

《愛語音·美語發音精講精練》內容相對緊湊，知識體系比較全，練習內容精練，適合想通過一定練習掌握基礎美語發音的同學.語音的掌握，實際上需要學習的知識量並不大，對詞彙量更沒有什麼特殊要求，只要有國中，甚至初一的英…

school和English發音相同嗎

完全不一樣
school [sku:l]
English ['iŋ；ɡliʃ；]

她們英語怎麼說.帶發音.謝謝

他們、她們、它們都是they英式發音[ð；em；，ð；ə；m]美式發音[ð；ə；m]賓格them

泰勒公式怎麼求N階導數

f（x）=f（x.）+f'（x.）（x-x.）+f''（x.）/2！*（x-x.）^2，+f'''（x.）/3！*（x-x.）^3+……+f（n）（x.）/n！*（x-x.）^n+Rn（x）
f（x）的n階導數
f（n）（x.）/n！+（Rn（x）的n階導數）

已知f（x）定義在（0，+∞）上的非負可導函數，且滿足xf'（x）-f（x）≥0，對於任意的正數a，b，若a＜b，①af（b）≤bf（a）；②af（b）≥bf（a）；③af（a）≤bf（b）；④af（a）≥bf（b）.其中正確的是（）
A.③B.①③C.②④D.②③

搆造函數g（x）=xf（x）∴g′（x）=xf'（x）+f（x）∵xf'（x）-f（x）≥0，∴g′（x）≥2f（x）≥0∴g（x）在（0，+∞）上為單調增函數∵a＜b，∴g（a）＜g（b）∴af（a）≤bf（b）搆造函數h（x）=f（x）x∴h′（x）＝xf…

設α1和α2分別是n級實對稱矩陣A屬於不同特徵值λ1和λ2的實特徵向量.證明向量組α1和α2正交.

In recent years閱讀答案
In recent years，computer games have become more and more popular in many cities and towns.A lot of small shops and restaurants along busy streets have changed into computer game houses in order to get moremoney.Theseplaces are always crowded with people，especially young boys.
In the computer game houses，people spend a lot of money competing with the computerizedmachines.It’s hard for one to win against a computer，but one can make progrss after trying again andagain.Peoplehave a kind of gambling psychology（賭博心理）when they play computergames.Themore they play lose the more they want to win，and atlast they even cannot live withoutit.Forschool boys，they have no mind for theirlessons.Whenclass is over，they rush to the nearby computer gamehouses.Someof them can get enough money from theirparents.Butsome of them are not lucky enough to get themoney.Theybegin to steal other students’money and become thieves.
閱讀題：1.Why does so many shops and restaurants change themselves into computer game houses？
2.What kind of people are there in this kind of places？
3.Why can't some people live without computer games？
4.According to this article，what are the reason for that people become thieves？

1、Because computer games popular in many cities and towns，shopkeeper order to more interest.2、Especially young boys.3、Because they want to win and have a kind of gambling psychology.4、They have a…

x^4+ax^3+bx^2+cx+d分解因式結果是（x+m）^4 a+b+c=64求d=？

x=0：d =m^4
x=1:1+a+b+c+d =（1+m）^4
（1+m）^4 -m^4 = 65
m=2
d=16

英語，most of +名詞這種結構，名詞是複數，還是單數？請舉例說明，謝謝

所加的名詞既可以是複數，也可以是不可數名詞.
most of the students are girls.
most of the water is salty water.

已知非零向量AB與AC滿足（AB/|AB|+AC/|AC|）*BC=0，且（AB/|AB|*AC/|AC|）=1/2，則三角形ABC的形狀為--

（AB/|AB|*AC/|AC|）=1/2，則cos∠A=1/2，所以∠A=60°.
（AB/|AB|+AC/|AC|）*BC=0，則∠B=60°，∠C=60°.
故三角形ABC是等邊三角形.