北大綠卡八年級英語上Unit9答案

1.B 2.C 3.C 4.D 5.C 6.A 7.A 8.B 9.C 10.C

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1. 北大綠卡八年級上册英語答案（完形填空） Jeff is very __1__at math. Kate，is not good aiis.Jeffoften help her __2__hermaths.Onenigh Jeff and Kate __3__out their exercise-books and began __4__theirlessons.SoonJeff finished his homework，but his sister __5__.She couldn't work out the last probiem.“Let me __6__you，“said Jeff.”No，please __7__.I'll do it __8__，“saidKate.Shethought and thought，and __9__an hour she worked itout.She__10__very tired，but very，very happy. 1. A.well B.good C.better D.best 2. A.to B.in C.with D.of 3. A.make B.takes C.took D.to take 4. A.make B.to make C.do D.to do 5. A.don't B.can't C.didn't D.finishedn't 6. A.help B.to help C.to call D.say to 7. A.don't B.didn't C.can't D.couldn't 8. A.himself B.myself C.herself D.by me 9. A.before B.behind C.after D.in 10.A.be B.is C.was D.were
2. 誰有初一下英語的北大綠卡，我不是抄答案，是寫完了對答案，切切！
3. 八年級人教版數學下册北大綠卡數學答案
4. 北大綠卡人教版數學七年級下册30頁12題答案是什麼？
5. 學長，北師大版的.
6. 問道sat數學題 The median of a list of 99 consecutive integers is 60.What is the greatest integer in the list？
7. 3X^2+XY+Y=15求XY.
8. 設x，y均為正實數，xy=8+x+y，則xy的最小值是
9. 已知x，y均為正實數，且xy=x+y+3，則xy的最小值為______.
10. 規定：x△y=3x-2y，已知x△（4△1）=7，求x的比值
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19. .設{a1，a2}（右倒的“∪”下麵加一個≠）M⊆；{a1，a2，a3，a4，a5}集合M的個數是？上面括弧表示真子集那個符號 M的個數多於{a1，a3}我知道，但M包含於{a1，a2，a3，a4，a5}，所以M的元素全包含在那串裏，M的個數怎麼會大於5？ 2）-x^2+x-4>0要把-x換正成x^2+x-4是不是不等號要換方向？
20. 初高中數學知識銜接（一）一元二次不等式（一） 2.試根據二次函數y=ax2+bx+c（a>0）的圖像，討論下列不等式的解集（用區間表示）：（1）ax2+bx+c>0（a>0）；（2）ax2+bx+c0）.