题目

动词填空 1. Yi Jianlian needs a lot of energy ________ (play) basketball. 2.There is no calories in green tea, so you can drink it without ________ (get) fat. 3.It’s 8:30pm. My parents ________ (watch) TV. 4. Each of my friends ________ (be) good at playing badminton. 5.I don’t have enough money ________ (buy) her a CD then. 6.If you want to learn English well, you should practise ________ (speak) English. 7.My cousin and I plan ________ (finish) our homework tomorrow. 8.My mother has a bad cold. She ________ (lie) in bed now. 9.What about ________ (fly) kites in the playground wit已知函数f（x）=x2+2ax，g（x）=3a2lnx+b．其中a，b∈R．（1）设两曲线y=f（x）与y=g（x）有公共点，且在公共点处的切线相同，若a＞0，试建立b关于a的函数关系式；（2）在（1）的条件下求b的最大值；（3）若b=0时，函数h（x）=f（x）+g（x）-（2a+6）x在（0，4）上为单调函数，求a的取值范围．