题型:阅读理解 题类:常考题 难易度:普通
广西北海市2019-2020学年高一下学期期末教学质量检测英语试题
Until now, much of the effort in search for life on the other planets has been on finding liquid water, because most of the extremely important chemical reactions that happen in plants and animals can only take place in the presence of water. And water is very common. In fact, the elements (元素) that make water (hydrogen and oxygen) are the first and third richest chemicals in the universe. This means that we can find water almost everywhere we look, from the surface of planets in our Solar System to the depths of space.
But for life as we know it to exist, it needs a planet where water exists in a liquid state, or its cells (细胞) would freeze or boil away. Earth is the only known planet that stays in a perfect position from our Sun to support water in a liquid state. Astronomers call this perfect distance from a star the "habitable (宜居的)" or "Goldilocks zone".
Scientists last year discovered that there is liquid water on the Mars, which made a lot of people very excited since finding a world within a star's habitable zone where liquid water can exist would be a great start to finding life.
Water is also found on the Mercury, and there are vast water oceans on some of Jupiter's and Saturn's moons. But we still haven't found life on the Mars, or any other planet in our Solar System.
Therefore, finding liquid water isn't enough. We still need to be able to detect other conditions that support life forms (scientists call them "biosignatures"). For example, we have to look into a planet's atmosphere and see what gasses are in it. If we find a planet with lots of oxygen, we have one more evidence to support the idea that there may be life there. Unfortunately, at the moment, it is not possible for us to detect the biosignatures on Earth-like planets beyond Mars. We have not perfected the technology to do it yet.
Welcome to Holker Hall & Gardens
Visitor Information
How to Get to Holker
By Car: Follow brown signs an A590 from JB6, M6. Approximate travel times: Windermere-20 minutes, Kendal-25 minutes, Lancaster-45 minutes, Manchester-1 hour 30 minutes.
By Rail: The nearest station is Cark-in-Cartmel with trains to Carnforth, Lancaster Preston for connections to major cities & airports.
Opening Times
Sunday-Friday (closed on Saturday)11:00 am-4:00pm,30 March-2nd November.
Admission Charges
Hall & Gardens |
Gardens |
|
Adults: |
£12.00 |
£8.00 |
Groups |
£9 |
£5.5 |
Special Events
Producers: Market 13th April
Join us to taste a variety of fresh local food and drinks. Meet the producers and get some excellent recipe ideas.
Holker Garden Festival 30th May
The event celebrate its 22nd anniversary with a great show of the very best of gardening, making it one of the most popular events in gardening.
National Garden Day 28th August
Holker once again opens is gardens in aid of the disadvantaged. For just a small donation you can take a tour with our garden guide.
Winter Market 8th November
This is an event for all the family. Wander among a variety of shops selling gifs while enjoying a live music show and nice street entertainment.
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