雅思阅读真题+题目+答案：drinking filtered water

雅思阅读真题+题目+答案：drinking filtered water

雅思阅读真题原文如下：

A The body is made up mainly of water. This means that the quality of water that we drink every day has an important effect on our health. Filtered water is healthier than tap water and some bottled water. This is because it is free of contaminants, that is, of substances that make it dirty or harmful. Substances that settle on the bottom of a glass of tap water and microorganisms that carry diseases (known as bacteria or germs) are examples of contaminants. Filtered water is also free of poisonous metals and chemicals that are common in tap water and even in some bottled water brands.

B The authorities know that normal tap water is full of contaminants and they use chemicals, such as chlorine and bromine in order to disinfect it. But such chemicals are hardly safe. Indeed, their use in water is associated with many different conditions and they are particularly dangerous for children and pregnant women. For example, consuming bromine for a long time may result in low blood pressure, which may then bring about poisoning of the brain, heart, kidneys and liver. Filtered water is typically free of such water disinfectant chemicals.

C Filtered water is also free of metals, such as mercury and lead. Mercury has ended up in our drinking water mainly because the dental mixtures used by dentists have not been disposed of safely for a long time. Scientists believe there is a connection between mercury in the water and many allergies and cancers as well as disorders, such as ADD, OCD, autism and depression.

D Lead, on the other hand, typically finds its way to our drinking water due to pipe leaks. Of course, modern pipes are not made of lead but pipes in old houses usually are. Lead is a well-known carcinogen and is associated with pregnancy problems and birth defects. This is another reason why children and pregnant women must drink filtered water.

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Questions 14-20

The text has seven paragraphs, A-G.

Which paragraph contains the following information?

Write the correct letter, A-G, next to questions 14-20.

14 ________ a short summary of the main points of the text

15 ________ a variety of methods used for water filtration

16 ________ making it easier for the body to get rid of dangerous chemicals

17 ________ finding out which contaminants your water filter should target

18 ________ allergies caused by dangerous metals

19 ________ a dangerous metal found in the plumbing of old buildings

20 ________ chemicals of cleaning products that destroy bacteria

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