I like flowers. I hope________ at a school with many flowers and trees in it.

保护环境就是保护我们自己．下列说法正确的是（   ）

上海某中学的陶陶与豆豆是同班同学，他们有一段关于家乡的对话（如图）。请你阅读对话，回答下面小题：

根据短文理解选择正确答案。
D
     Recently, a solar-powered (太阳能动力的） plane took to the sky for the first time. It passed an important test on the way to travel around the world.
    The plane took off from an airport（飞机场）in Switzerland. It slowly rose above the fields and into the sky.
   “There has never been an airplane of that kind that could fly—never an airplane so big, so light, using so little energy.” said Bertrand Piccard, a leader of the project.
    During the 90-minute flight (飞行）, the plane did several turns. It climbed nearly 1. 6 km above the countryside.
    Engineers（工程师） plan to test a night flight（飞行）before July. Then they will use the results（结果）of the tests to build a second plane. They plan to travel around the world in that plane in 2012.
    “We want to fly it day and night with no fuel(燃料）,” Piccard said. Piccard and pilot (飞行员）Andre Borschberg will take the plane around the world. They will make a few stops to change places and rest after a long time in the air--and to show off their airplane.
     The plane will fly at 70 km per hour on average(平均）. That is faster than a bike and slower than a car. The pilots will keep the plane in the air for up to five days at a time.

在漫长的地球历史中，生命经历了由简单到复杂，由低等到高等，由水生到____的进化过程。____为生物进化提供了直接的证据。