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1、课下能力提升(六).单词拼写1He is responsible for all the travel arrangements (安排)2Everyone stood up and applauded (鼓掌) at the end of his concert, congratulating on his success.3The price of the bike is reasonable (合理的), so I will take it.4Teenagers tend to do something without considering its outcome (后果) even
2、if they may get hurt.完成句子1如果可能的话，我想跟你一起去度假。If_possible,_I want to go for a holiday with you.2记住，你必须按照我告诉你的方式去做。Remember, you must do it as_I_tell_you.3他一到办公室，就意识到把手机落在家里了。Upon_his_arrival_at_the_office,_he realized that he had left his cell phone at home.4我们已经安排了一个护士来照顾老人。Weve arranged_for_a_nurse_t
3、o_look_after the old man.5走了好远的路他感到筋疲力尽。After a long walk he felt_worn_out.6孩子们不知道生活的艰难。The children are_not_aware_of the fact that life is hard.阅读理解APeople who do not get enough vitamin C may feel tired. Their legs may hurt. Their gums (牙龈) may begin to bleed and even fall out. These are the sympto
4、ms of scurvy (坏血病). In the 1800s, sailors often spent long time at sea. Thats why many developed scurvy.While looking for more information about scurvy, 14yearold Amber Cui saw some dietary guidelines that recommended eating vitaminCrich fruits and vegetables raw. Amber hates raw green peppers, but
5、doesnt mind them cooked. So she began to wonder what cooking does to vitamin C levels of vegetables.Raw peppers indeed had the most vitamin C, she found. Ten minutes of boiling reduced the vitamin C level by about 25 percent. But as the peppers were boiled for 20 or 30 minutes, she says, the vitamin
6、 C level began to rise again. This might be because after being boiled for that long, the peppers begin to lose water. That could concentrate (浓缩) the vitamin in the vegetable.Most people probably dont blend their peppers before they eat them. But we do chew and digest them. Thats how the body is ab
7、le to break down the hard cell walls of plants to approach their vitamins, notes Anitra Carr. She studies the health effects of vitamin C at the University of Otago in Christchurch, New Zealand.Ambers pepper results are similar to other scientific findings, Carr says. “The amount of vitamin C in foo
8、ds generally decreases with cooking，” she notes. The vitamin can go into the water in which peppers are cooked. Heat and other chemical processes can also break it down.But we might still get more vitamin C from some cooked vegetables than raw, Carr says. How? Cooking or blending can soften and brea
9、k up plant cell walls, she explains. This can make it easier for the body to use the vitamins inside.1Why did many sailors develop scurvy?AThey lacked good sources of vitamin C.BThey lived an unbalanced life.CThey ate too much seafood.DThey often got wounded.解析：选A推理判断题。由第一段的内容可知，水手因为缺少维他命C的来源，所以会得坏血
10、病。2Why did Amber Cui do the experiment?ATo prove dietary guidelines are correct.BTo encourage people to eat green peppers.CTo find the best way to preserve vitamin C levels of vegetables.DTo know the link between cooking and vitamin C levels of vegetables.解析：选D细节理解题。由第二段“So she began to wonder what
11、cooking does to vitamin C levels of vegetables”可知，她做实验是为了知道维他命C和烹饪的关系。3What did the findings of Amber Cuis experiment indicate?ACooking can damage vitamin C in vegetables.BCooking increases vitamin C levels of vegetables.CVegetables should be boiled for over twenty minutes.DGreen peppers should be e
12、aten raw for their vitamin C.解析：选A推理判断题。由倒数第二段“Ambers pepper results are similar to other scientific findings, Carr says. The amount of vitamin C in foods generally decreases with cooking， she notes”可知，她的实验表明烹饪会破坏蔬菜中的维他命C。4What do we know about vitamin C according to Anitra Carr?AWe should eat veget
13、ables raw for more vitamin C.BAmbers pepper results dont confirm previous findings.CVitamin C disappears when plant cell walls are broken down.DOur bodies consume vitamin C better from cooked vegetables.解析：选D细节理解题。由最后一段“But we might still get more vitamin C from some cooked vegetables than raw”以及“Th
14、is can make it easier for the body to use the vitamins inside”可知，食物加工后，我们更容易吸收其中的维他命C。BNo matter what the mode of transport, the result can be motion sickness. While many experts believe there may be a genetic (遗传的) problem involved, they arent exactly sure why some people get sick from riding in a
15、car, boat, plane, or train, while others dont. If you do, youre not alone. Motion sickness caused some pilots to drop out of training during World War.And to this day, astronauts struggle to fight against this side effect of space travel.Normally, the eyes, inner ears, skin, and muscles send informa
16、tion to the brain that allows it to determine the bodys position in space and to track whether and in what direction you are moving. Motion sickness is believed to occur when this balancing system gets influenced by contradictory (矛盾的) messages sent from the eyes and inner ears.With a few simple steps, you may be able to preven
