材料一　2014年12月14日凌晨2时左右,《联合国气候变化框架公约》第20次缔约方大会暨《京都议定书》第10次缔约方大会终于在秘鲁首都利马宣告闭幕。大会通过的最终决议力度与各方预期尚有差距,但就2015年巴黎大会协议草案的要素基本达成了一致。

材料二　气候专家预计,如果不将全球气温的上升幅度控制在2摄氏度内,用不了几年,一些低地岛国就会因全球变暖、海平面上升而遭遇从地球上消失的“灭顶之灾”。专家认为,要实现这一目标,到2050年全球二氧化碳排放量至少要在1990年的基础上减少50%,其中工业国家的排放量要减少80%以上。

生物膜分子结构模型的探究历经了100多年的时间，目前仍在研究之中．在这期间，无数科学家积极投身该项研究之中并各自取得一定的进展．下列叙述正确的是（　　）

已知a＜b，下列四个不等式中，不正确的是（      ）

    Mark lived in a village far away. One day he became very ill and everyone thought he would 1 soon. They sent for a doctor. Two days 2 the doctor came and looked over the sick man.3 asked for a pen and some paper to write down the name of the medicine. But there was no pen 4 paper in the village, because no one could write.

    The doctor 5 up a piece of burnt wood from the fire and wrote the name of the medicine on the 6 of the house. “ Get this medicine for him, and he will get 7 soon. ” he said.  Mark's family and friends did not know8 to do. They could not read the strange words. Then a young man 9an idea. He took off the door of the house, put it on his carriage(马车) and drove to the nearest 10. He bought the medicine there, and Mark was soon well again.