题目

阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项。Ifyou look Chinese and speak Mandarin, you can call for a ride in Vancouver viaWeChat, a Chinese app. The drivers normally call back to1theorder, says Daniel Merkin, who lives in the Canadian city. Sometimesthey'll 2 on me when they realize I don't speakMandarin, he says. But he keeps 3,because popular ride-hailing (网约车) services,like Uber (优步), are not available. TheChinese service is not legal, but it is 4.Mr. Merkin hopes that his 5 will soon expand. In July （2013•东至县一模）设函数f（x）=a2x2（a＞0）．（1）将函数y=f（x）图象向右平移一个单位即可得到函数y=φ（x）的图象，写出y=φ（x）的解析式及值域；（2）关于x的不等式（x-1）2＞f（x）的解集中的整数恰有3个，求实数a的取值范围．