【简答题】Give 1. an extra 2. minutes to make sure you 3. in time.

【单选题】如图，直线l 1 ：x=1，l 2 ：x=2，l 3 ：x=3，l 4 ：x=4，…，与函数y= 2 x （x＞0）的图象分别交于点A 1 、A 2 、A 3 、A 4 、…；与函数y= 5 x (x＞0) 的图象分别交于点B 1 、B 2 、B 3 、B 4 、…．如果四边形A 1 A 2 B 2 B 1 的面积记为S 1 ，四边形A 2 A 3 B 3 B 2 的面积记为S 2 ，四边形A 3...

【单选题】The installments of new traffic signals on Devonshire Street has been only ______successful in lowering traffic congestion.

【简答题】Write a thank-you letter to your parents(10 points) --- Make sure you use the right format for a letter of thanks. (2 points) --- Make sure you use the right tone for your writing. (2 points) --- Desc...

【简答题】已知函数 f(x)= 1 3 x 3 - x 2 -3x+ 4 3 ，直线l 1 ：9x+2y+c=0．若当x∈[-2，2]时，函数y=f（x）的图象恒在直线l的下方，则c的取值范围是______

【简答题】已知两条直线l 1 ：y=2，l 2 ：y=4，设函数y=3 x 的图象与l 1 、l 2 分别交于点A、B，函数y=5 x 的图象与l 1 、l 2 分别交于点C、D，则直线AB与CD的交点坐标是______．

【简答题】设函数f(x，y)=x 3 -y 3 +3x 2 +3y 3 -9x．

【简答题】设直线l 1 ：x+my+6=0和l 2 ：（m-2）x+3y+2m=0，当m=______时，l 1 ∥ l 2 ．

【单选题】Why should a successfu; company allow another firm to its brains?

【简答题】读下列介绍,填写相应的岗位名称。 waiter cook barman manager ___1____:I know a lot about beer and wine. I make sure the waitresses get the right drinks for their guests. ___2____: I make sure everyone does thei...