Ⅰ.阅读理解(共15小题；每小题2分；满分30分)
A
What will power your house in the future？Nuclear，wind，or solar power？According to scientists at the Massachusetts Institute of Technology (MIT)in the US，it might be leaves—but artificial (人造的) ones.
Natural leaves are able to change sunlight and water into energy.It is known as photosynthesis(光合作用)．Now researchers have found a way to imitate this seemingly simple process.
