题型:阅读理解 题类:常考题 难易度:普通
福建省泉州市德化第一中学2016-2017学年高一上学期英语期末考试试卷
Do you drink water that's been left sitting out overnight or even for another day? Have you noticed it tastes different?
Tap water that has been left to sit out slowly begins to acquire(获得) off taste. Many people think that this is because of microorganisms. But that's not what makes old water taste not fresh. For that we can thank carbon dioxide. After about 12 hours, tap water starts to go flat as carbon dioxide in the air starts to mix with the water in the glass, lowering its pH and giving it an off taste. But it's most likely safe to drink.
However, back to those microorganisms. If you use a dirty glass day after day, there is more of a chance of bacteria making themselves known; a risk that increases if you share the glass with another mouth as well. But assuming(假设) you use a fresh glass every few days, you probably won't have a problem unless the glass has been touched by dirty fingers, and especially if those dirty fingers went unwashed after using the bathroom.
As for plastic water bottles that have been left out in the sun or in the car, step away from the bottle, warns Dr. Kellogg Schwab, director of the Johns Hopkins University Water Institute. "A chemical called biphenyl-A, or BPA, along with other things used to make plastic can leach(过滤) into your water if the bottle heats up or sits in the sun," he explains. BPA, as you probably know, has been linked to everything from heart disease to cancer. Schwab also adds that plastic used for commercial bottled water isn't meant to be washed or refilled, so use only one time and recycle. Or don't buy them at all; use refillable water bottles instead.
The Sands of Time St Cyrus National Nature Reserve is much more than just golden sands and beautiful flowers. The area has a long human history too. From Stone Age hunters to amazing pioneers, discover the daring deeds and sad stories from St Cyrus' past. Date: 23rd August 2010 Time. 2 p. m.—3:45 p. m. Type of event. Guided walk |
Between the Tides A celebration of the world between the tides. Join local salmon (大马哈鱼) fisherman Jim Ritchie on a fascinating walk to learn how local folk have made a living from the world between the tides, harvesting salmon from the beach at St Cyrus for hundreds of years. Date: 25th August 2010 Time: 2 p. m.—4 p.m. |
Type of event: Family event |
Ice & Fire St Cyrus National Nature Reserve has had an eventful life! From its days near the equator (赤道) to volcanic eruptions and ice ages. Celebrate the start of Scottish Geology Month with a walk through the reserve and travel back in time to uncover the clues to St Cyrus' past hidden in the cliffs. Date: 31st August 2010 Time: 2 p. m.—3:45 p. m. Type of event: Guided walk |
Scary Stories It's getting darker at nights... it's almost Halloween, when the ghosts (鬼怪) come out to play. Join us for some spooky stories of Dinnet and Deeside long ago... and listen out for things that sound strange in the night! Date: 25th October 2010 Time: 7 p. m.—9 p. m. Type of event: Family event |
Note:
* All under 18's must be accompanied by an adult
* Pets allowed: No
* Cost: Free
* Phone: 01674830736
* Location: SNH Visitor Centre, St Cyrus National Nature Reserve
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