问题
单项选择题
().
A.A
B.B
C.C
D.D
答案
参考答案：D
解析：
此数列规律是分子是以7为公差的递减数列，分母是以4为公差的递减数列，即所求项为
，故选D，
搜题请搜索小程序“爱下问搜题”
().
A.A
B.B
C.C
D.D
参考答案：D
解析：
此数列规律是分子是以7为公差的递减数列，分母是以4为公差的递减数列，即所求项为，故选D，
| 从Ⅱ栏中选出与Ⅰ栏相对应的正确答语。 |
| Ⅰ ( )1.What are you going to do this Sunday evening? ( )2. Why not come with me? ( )3. I have a backache. ( )4. Are you sure? ( )5. What's the matter with it? | Ⅱ A. It doesn't work. B. I'd like to, but I'm too busy. C. Yes, quite sure. D. I'm going to a concert. E. You shouldn't lift heavy things. |