连句成段

____我们坐在河边柳树下，放下了鱼钩。

____忽然浮标一沉，我急忙把鱼竿往上提，一条银白色的小鱼就钓上来了。

____浅红色的浮标在水面上。

____星期天早晨，我和小刚扛着鱼竿到郊外去钓鱼。

____我们高兴地把鱼竿举在空中，摇晃着，喊着：“我们钓着鱼了！”

用如图所示装置，在常温下，分别进行研究燃烧条件和研究氧气性质的实验． 已知：白磷的着火点为 40℃．

（1）H₂O₂ 稀溶液与 MnO₂ 接触时发生反应的化学方程式为____ ．

（2）实验1中，推入H₂O₂ 溶液前，燃烧匙和水中的白磷均不燃烧，燃烧匙中白磷不燃烧是因为____ ，烧杯中白磷未燃烧是因为____ ；打开止水夹，推入 H₂O₂溶液后，观察到烧杯中的现象是____ ．

（3）实验2中，推入 H₂O₂ 溶液后，观察到木炭燃烧得更剧烈，由此得出氧气的气化学性质是____ ；木炭熄灭后冷却一段时间，打开止水夹，烧杯中的部分溶液流入集气瓶．

阅读理解:阅读下列短文，然后从每题所给的四个选项(A、B、 C、和D)中，选出最佳选项。

Chinese writer Mo Yan won the Nobel Prize in Literature in 2012.Mo,who was born in 1955 into a farmer's family in Gaomi County in Shandong Province, is the first Chinese national to win the Nobel Prize in Literature. In his early years, life was not easy and he experienced hunger. These things have influenced Mo Yan’s later writings.

60-­year­-old Park Geun­hye(朴槿惠)was elected the new President of South Korean in December, 2012. She becomes the country's first female head of state and her term will last five years from 2013. “I will become a president who puts people’s living before anything else.” She told the cheering people in central Seoul as the accepted her win. “I will keep my promises.”

Barack Obama (bom in Honolulu, Hawaii in 1961), who was elected the 44^th President of the United States in 2008, has been elected again to a second term, fighting against Republican Challenger Mitt Romney. Obama is a graduate of Columbia University and Harvard I aw school. His father was from Kenya. And his mother was born in Wichita, Kansas.