阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。We all know clean water is important for good he-组卷网

题型：语法填空-短文语填难度：0.65 引用次数：587 题号：9391754

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

We all know clean water is important for good health. But now we also know we should watch 1 we keep our water in. Plastic bottles hardened with a dangerous material 2 (call) BPA can release a chemical into our water that harms our bodies. Since 2011, many countries 3 (ban) plastic with BPA from use in food containers and baby bottles. But are other non-BPA plastics safe?

Plastic labeled BPA-free might use other chemicals that have 4 (harm) health effects. 5 (Study) have shown that low levels of those chemicals might have the same effects as BPA. So, what should people do? The 6 (good) material to drink from is glass, 7 has no chemicals that can poison water.

Another good choice 8 a drink container is stainless steel. Stainless steel bottles are better than aluminum bottles, which are covered with a thin plastic 9 (protect) the metal from acids. There are many good food-grade stainless steel water bottles on the market.

If you do decide to use a reusable plastic water bottle, avoid 10 (keep) it in the sun. Sunlight and hot liquid speed up the release of chemicals into your drinking water.

2020·广东广州·一模查看更多[6]

更新时间：2020-01-14 15:31:43 |

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【知识点】科普知识

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The first complete dinosaur skeleton was found in 1858. The bones belonged to a creature 1 ( name) Scelidosaurus (肢龙). The British biologist Richard Owen incompletely described its body in papers that 2 (publish) in 1861. But for years, scientists didn't pay much attention 3 Scelidosaurus. Therefore, a 4 (far) study is needed to examine the research results.

That has changed in 2020. Scientists have recently finished several studies of the dinosaur's remains. The 5 (find) suggest it had an unusual build. Biologist David Norman published his fourth study on Scelidosaurus, 6 appeared in the Zoological Journal of the Linnean Society. Dinosaurs had only been known from pieces of bone until the discovery. Scelidosaurus was 7 early member of the ankylosaurs (甲龙) family, whose bodies were so strong that they're called the tank dinosaurs.

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People may start to feel down when the days get shorter in the fall and winter and begin to feel better in the spring, with longer daylight hours.

In some cases, these mood changes can affect 1 a person feels, thinks, and handles daily activities. If you have noticed that you experience a range of symptoms (症状), like having difficulty concentrating, becoming annoyed very easily, and withdrawing 2 social interactions, you may be suffering from seasonal affective disorder (SAD).

Women tend 3 (develop) seasonal affective disorder more than men. The condition often 4 (begin) in the third or fourth decade of life, though a few 5 (child) show signs of it. In most cases, SAD starts in the late fall or early winter and goes away during the spring and summer; this 6 (know) as winter-pattern SAD or winter depression.

Scientists do not 7 (full) understand what causes SAD. Research indicates that people with SAD may have reduced activity of the brain chemical serotonin (血清素), 8 helps regulate moods. Research also suggests that sunlight controls the levels of molecules (分子) that help maintain normal serotonin levels, but in people with SAD, this regulation does not function properly, 9 (result) in decreased serotonin levels in the winter.

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The State Administration of Cultural Heritage （ SACH） will start a campaign, 1 will involve regular checks on protection efforts by local governments to prevent damage to the Great Wall. The SACH will open a special line for information about 2 （go） against laws and damage to the Great Wall from the public.

The Great Wall covers over 21,000 kilometres from Gansu Province to Hebei Province. According to SACH statistics, about 30 percent of a 6,200 - km section of the wall 3 （ build） in the Ming Dynasty has disappeared and less than 10 percent 4 （ be ） considered well - preserved. The Great Wall has faced threats 5 both nature and humans. Some 6 （ nature） phenomenon such as earthquakes, rain and wind have 7 （gradual） left the wall with many broken bricks.

Human 8 （ activity ） , such as irresponsible （不负责任的）development and agriculture near the wall, have damaged the landmark, according to research by the China Great Wall Society.

9 lack of protection efforts in remote regions and a weak plan for protection have also made a 10 （ contribute） to the damage.

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