Can plants keep alive for more than 60 years when being sealed up (被密封) in a glass bottle? The answer is YES, which may sound _______.   What David Latimer did will throw light on this question. He has a garden sealed inside a huge glass bottle. He has only opened it once since he started it over 60 years ago.

In 1960, when the bottle garden was popular, David also had a great interest in it. He decided to _______ a bottle garden. After putting some compost (混合肥料) and water, which are _______ for plants to grow, into the 10-gallon bottle, he put a young plant into it. David wondered what would happen if he sealed it up. So he did like that and put it near a sunny window, _______ light to enter through the glass.

The bottle garden soon made an ecosystem (生态系统) of _______ own through the magic of the sun just like what plants do in nature. In 1972 David did open the bottle to water the plant. But then it was kept sealed _______ fresh water or air. It may seem strange that the plants _______ to grow, but it’s not-the garden is a self-sufficient (自给自足的) ecosystem. It’s a _______ example of how nature can provide everything necessary for itself to live. The bottle just _______ in the way that the earth does as a whole. How amazing the bottle garden is!

David plans to _______ the bottle garden to his children after he passes away. If they don’t want it, the mini-ecosystem will go to the Royal Horticultural Society.