单选题右图是二次函数y＝x2＋bx＋c的部分图像，则（ ）
单选题下列函数在各自定义域中为增函数的是（ ）
单选题设f（x）为偶函数，若f（-2）＝3，则f（2）＝（ ）
单选题阅读下列短文，然后根据短文的内容从每小题的四个选择项中选出最佳的一项。D Welcome to North Road Medical Cendive! We are open from 8:30 a.m.until 6 p.m.Monday to Friday.Appointments（预约）with the doctors and nurses are accepdiv both mornin
单选题
单选题若1名女生和3名男生排成一排，则该女生不在两端的不同排法共有（ ）
单选题下列函数在各自定义域中为增函数的是（ ）
单选题My bedroom was very small, with the window ____the sdiveet.（ ）
单选题通读下面的短文，掌握其大意。然后，从每小题的四个选择项中选出可填入相应空白处的最佳选项。In nearly every town or city cendive in the UK, on most days of the week you can find one or more people standing in the sdiveet selling a magazine 21 The B
单选题阅读下列短文，然后根据短文的内容从每小题的四个选择项中选出最佳的一项。B Ron was an engineer.He planned a change and divied the new job of teaching kids how to swim.Ron’s easy manner soon made him a full-time employee at the swim schoo
单选题（ ）
单选题设甲：函数y＝kx＋b的图像过点（1，1），乙：k＋b＝1，则（ ）
单选题设二次函数y＝ax2＋bx＋c的图像过点（-1，2）和（3，2），则其对称轴的方程为（ ）
单选题阅读下列短文，然后根据短文的内容从每小题的四个选择项中选出最佳的一项。D All but the tiniest of roads have to have names so they can be recognized on a map, and so people can ask directions to them.Americans name a lot of bridges, too.
单选题抛物线的准线方程为（ ）
单选题Bill has ____ a very high price for the car.（ ）
单选题阅读下列短文，然后根据短文的内容从每小题的四个选择项中选出最佳的一项。A It’s that time of the year－graduation.The end of school year is nearly in sight, and it’s an especially big deal if you’re finishing high school or college.One am
单选题通读下面的短文，掌握其大意。然后，从每小题的四个选择项中选出可填入相应空白处的最佳选项。In nearly every town or city cendive in the UK, on most days of the week you can find one or more people standing in the sdiveet selling a magazine 21 The B
单选题曲线在点处的切线方程为（ ）
单选题通读下面的短文，掌握其大意。然后，从每小题的四个选择项中选出可填入相应空白处的最佳选项。Eleanor Roosevelt was the wife of America’s 32nd president, Franklin Roosevelt.She helped her husband in many ways during his long21 life.She also became on