下表为全国城乡居民人均收入统计表，从中可以得出（ ）
| 年份 |
全国人均可支配收入（元） |
城镇人均可支配收入（元） |
农村人均纯收入（元） |
| 2013年 |
18311 |
26955 |
8896 |
| 2014年 |
20167 |
28844 |
10489 |
①城乡居民收入存在差距
②城乡居民收入没有差距
③城乡居民生活水平逐渐降低
④应该缩小城乡差距，实现共同富裕
A.①② B.③④ C.①④ D.②③
China has made a promise________ she will try her best to keep the world peace.
| A．what |
| B．that |
| C．which |
| D．whether |
Mary, it's already 7 0'clock I'm afraid there is not much time ________for you to ________ for the ball.
| A．leaving; get dressing |
| B．remaining; get to dress |
| C．remained; get dressed |
| D．left; get dressed |
They arrived at the farmhouse, in front of which________.
A is sitting a boy
B. sat a boy
C. a boy sat
D. a boy is sitting
All possible means ________been taken to prevent the river________．
| A．have;polluting |
| B．has; polluted |
| C．has; from polluted |
| D．have;being polluted |
The government is considering the environment-friendly plan which some scientists would like to see________soon．
| A．to be carried out |
| B．be carried out |
| C．carrying out |
| D．carried out |