题型:阅读选择 题类:常考题 难易度:普通
新目标(Go for it)版七年级英语下册Unit 2 What time do you go to school? 同步评估(含小段音频)
①fruit ⑦flowers
③cakes ④vegetables
When we look at a picture of Earth from space, there are areas of green, blue, and white. Most people will recognize(辨认) that the green island, the blue is water, and the white is clouds. Taken as a whole, Earth is mainly blue. That is because of the amount(数量) of water it has that covers the surface. So, how much of Earth is water? About 71% of Earth's surface is covered in water. Of that 71%, the oceans hold about 96.5% of the water. The water found in oceans is all salt water. The remaining 3.5%of the water is fresh water, which can be found in lakes, rivers, glaciers(冰川), and in the ground. Freshwater is what people use for farming, raising animals, drinking, and daily activities such as taking showers and washing clothes or dishes. Does the amount of water stay the same? For the most part, yes. Water on Earth is part of a closed system. That is, water is always moving and changing forms between ice, liquid, and gas. The form of the water changes all the time, but the total amount of water on Earth remains the same. If Earth is not necessarily running out of water, why are people worried? Why do we need to think about saving water? First, humans can only use fresh water, which is only about 3.5% of all of Earth's water. Second, of this 3.5%, only about 1% is available for human use. Most fresh water is found in glaciers far from where anyone lives. Third, the amount of water that is useful for humans is being used faster than it can be cleaned and put back into the environment. Now, knowing the facts about water, it is our job to make sure we use Earth's water in a good way. |
Morris Old Folks' Home
is looking for volunteers!
Do you feel good helping someone? Do you have time every Friday from 3 p. m. to 5 p. m.? If you answered"yes" to the two questions above, we welcome you to join our volunteer team to help the elderly at Morris Old Folks' Home! |
You may help out by doing any of the following:
★ chatting with the elderly
★ reading story books to the elderly
★ weeding the garden
★ organizing monthly birthday celebrations
★ checking and recording the donations(捐赠物) that we receive
Note: Volunteers must be at least twelve years old and must attend a one-hour briefing session(情况介绍会) before they can begin their journey as a Morris Old Folks' Home volunteer.
If you are interested, emailusatMorrisoldfolks@gmail.com .
To find out more, you can call us or come down to our Old Folks' Home every Friday to have a look at what it is exactly that our kind-hearted volunteers do!
Besides receiving smiles of thankfulness from the elderly, volunteers will receive a freeT-shirt and water bottle from Lifehouse Pte Ltd.
Join us as a volunteer today!
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