For years I wanted a flower garden. I’d spend hours   31  different things I could plant. I believe they would look nice together.
But then we had Mattew. And Marvin. And the twins, Alisa and Alan. And then Helen. Five children! I was too   32   raising them的grow a garden.
Money was tight（拮据）,as well as time. Often when my children were little, one of them would want something expensive. And I’d have to say, "Do you see a money tree outside? Money doesn’t    33   on trees, you know."
34  , all five got through high school and college（大学）and were off on their own. I started thinking again about having a garden. Then, one morning on Mother’s Day, I was working in my kitchen. Suddenly, I looked out of the window and there was a   35  tree, planted right in my garden. I thought it   36   be a weeping willow(垂柳),because I saw things    37   around on all its branches（树枝）.Then I put my  38   on and I couldn’t believe what I saw. There was a money tree in my garden!
I went outside to have a look. It was    39   ! There were dollar bills all over that tree. There was also a note in the tree. It    40   ,"We all love you, Mom."
【小题1】A-talking about    B. thinking of     C. preparing for       D. looking after

After spending years searching for a planet with life, scientists may have found one. In September 2010, a team of US scientists discovered an Earth-sized planet called Gliese 581g. It has a surface temperature neither too hot nor too cold for liquid（液态）water. Scientists think there is a chance that the planet could have life.
The planet Gliese 581g goes around a star called Gliese 581, which is about 20 light-years from Earth. That is about 194 trillion（万亿）kilometres －500 million times farther away from us than the moon.
A spacecraft traveling at a one-tenth of the speed of light would reach Gliese 581g within about 220 years. A human can’t live that long, but robotic explorers could make the job easier. However, our fastest spacecraft don’t come anywhere near that one-tenth light-speed mark.
At present, scientists don’t know what the surface might be like on Gliese 581g. What they know is that the planet is at the sight distance from its star to have liquid water. It’s also at the right distance to have an atmosphere that could protect the water if it is on the surface.
Although spacecraft won’t be getting there anytime soon, one way to look for life on Gliese 581g is to turn our radio telescopes（望远镜）towards the planet and search for radiation（放射）. By studying the radiation, scientists would find out about the chemicals（化学物质）around the planet and discover it Gliese 581g has an atmosphere. If it has one, studying the atmosphere would give us a good idea if the planet has life or not. But it’ll probably be many years before we can do this properly.
People have been arguing about whether there is alien life on Gliese 581g. Any discussion about alien life is just guessing at this point, according to its discoverers.
【小题1】 What did scientists find in September 2010?