翻译句子（划线部分必须用Unit 3和Unit 4中的词汇表达！）
1.每年春节期间，每一个中国人都被和家人团聚的喜悦所包围着。
2.如果你要申请这份工作，你需要表达自己，还要向别人展示出你的善意。
3.每一年在除夕夜，我们挂起装饰品迎接新年的到来，还放烟火吓走怪兽（monster）“年”。
4.尽管社交媒体能告知我们，我们的朋友最近在忙着什么，但是我们只有通过面对面交流才能建立起有意义的关系。
5.新科技会给我们带来各种各样的问题。比如，我们可能会对电脑游戏成瘾，我们也可能会有更少机会来发展社交能力。
完成句子：根据首字母和英文解释填单词补全句子，注意形式变化。
1.The two a _________ of the accident do not agree. (a written or spoken description of something)
2.We eventually ran out of p_________ with his childish behavior. (the ability to stay calm and accept a delay or something annoying without complaining)
3.When labels are a__________ to luggage, they can be easily recognized. (to join one thing to another)
4.Information Technology equips our home with labor-saving d_________ such as dish washers and sweeping robots. (an object or a piece of equipment that has been designed to do a particular job)
5.All the goods were supposed to be d_________ yesterday, but there was a delay due to the bad weather. (to take goods, letters, etc. to the person or people they have been sent to)
6.Can you do me a f_________ and pick up Sam from school today? (a thing that you do to help sb.)
7.I opened the e_________, pulled out the document and read it. (a flat paper container used for sending letters in)
8.The store c_________ its customers through false advertising. (to take something from someone by lying or breaking a rule)
9.The school wants to e_________ with new teaching methods. (to try or test new ideas, methods, etc. to find out what effect they have)
10.We will continue to f_________ our efforts on cutting costs. (to give special attention to one particular person or thing, or to make people do this)
语法填空:在未给提示词的空白处仅填写1个适当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。
We all know the Internet. It has affected the words we use greatly. It has been 20 years since the website Dictionary.com1. (set) up and it has looked into how other meanings of the words we commonly use2.(create) by the worldwide web in the past two decades. Dictionary.com boss Liz says it's3. (interest) to see how much the rise of technology has shaped our word use over time. 4. (celebrate) its 20th birthday, the website looks back at 20 words5. have expanded (扩大) in meaning. One of the clearest changes is to the word “friend". For centuries, this word was a noun. The rise of Facebook means it is now also a verb. The word “tablet" once only6. (mean) a flat piece of stone, but now it is a small portable computer. Centuries ago, who believed that these changes 7. (happen) in the 21st century?
语法填空：在未给提示词的空白处仅填写1个适当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。
Max Vernon Mathews has been called the father of computer music. In 1957, Max Mathews wrote a computer program 1. enabled a computer2. (produce) sound and play it back. His computer program 3. (call) Music. The science fiction writer Arthur C. Clarke visited Bell Laboratories in the 1960s. He heard a computer sing the song Daisy Bell on programs developed by Max Mathew and other engineers. Clarke noted this technology in his book 2001: A Space Odyssey, which4. (make) into a movie later. Mathews continued creating other versions of the Music program. He became 5. (interest) in how computers could help musicians outside recording studios. He hoped that laptop computers6. (consider) serious instruments one day.
语法填空:在未给提示词的空白处仅填写1个适当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。
In the age of the smartphone, there seems no reason to ask questions about: the weather forecast, a business’s phone number or directions, 1.can all be easily found on the Internet, but very often people actually ask these things by 2. (make) a call. Your answer may3.(reply) to with a thank-you email. This isn’t the first time that great changes have taken place in our manners due to technology. In the late 1870s, when the telephone4. (invent), people didn’t know how 5. (greet) a caller. Often there was just silence. Alexander Graham Bell, the inventor,6.(suggest) that people say “Ahoy”, but finally “Hello” went out. Try to be respectful no matter who you communicate with. Just keep it in mind that politeness never 7. (go) out of fashion.
Running on Empty
For almost a century, scientists have assumed, tiredness—or exhaustion—in athletes originates(起源于) in the muscles. Precise explanations have varied, but all have been based on the “Limitations Theory”. In other words, muscles tire because they hit a physical limit: they either run out of fuel or oxygen or they drown in harmful by-products(副产品).
In the past few years, however, Timothy Noakes from the University of Cape Town, South Africa, has examined this standard theory. Tiredness, he argues, is caused not by signals springing from overtaxed muscles, but is an emotional response which begins in the brain. The fundamental nature of his new theory is that the brain paces the muscles to keep them well back from the edge of exhaustion. When the brain decides it’s time to quit, it creates unbearable muscle tiredness. This “Central Governor” theory remains controversial, but it does explain many puzzling aspects of athletic performance.
A recent discovery that Noakes calls the “lactic acid paradox” made him start researching this area seriously. Lactic acid is a by-product of exercise, and the increase of it is often mentioned as a cause of tiredness. But when research subjects exercise in certain conditions created artificially, they become tired even though lactic acid levels remain low. Nor has the oxygen content of their blood fallen too low for them to keep going. Obviously, something else was making them tire before they hit either of these physiological limits.
Noakes conducted an experiment with seven cyclists. It has long been known that during exercise, the body never uses 100% of the available muscle fibres(纤维). The amount used varies, but in some tasks such as this cycling test the body calls on about 30%. His team found that as tiredness set in, the electrical activity in cyclist’s legs declined—even when they were making a great effort to cycle as fast as they could.
To Noakes, this was strong evidence that the old theory was wrong. “The cyclists may have felt completely exhausted,” he says, “but their bodies actually had considerable reserves that they could theoretically tap by using a greater amount of the resting fibres.” This, he believes, is the proof that the brain is regulating the pace of the workout to hold the cyclists well back from the point of extreme tiredness.
1.Which of the following is supported by “the Limitations Theory”?
A.Tiredness is caused by signals from brain.
B.Athletes feel tired when they use up all their energy.
C.The body uses 100% of the muscle fibres in exercise.
D.Athletes become tired though lactic acid levels remain low.
2.Noakes has found out that ___________.
A.muscle fibres control athletes’ movements
B.Lactic acid levels remain high in cycling test
C.mental processes control the symptoms of tiredness
D.different exercises use different amount of muscle fibres
3.It is likely that both theories accept that ___________.
A.lactic acid is produced in muscles during exercise
B.the oxygen content in blood may rise after sports
C.tiredness is a harmful by-product of exercise
D.the energy in human bodies can be balanced
4.What is Paragraph 3 mainly about?
A.The description of a new test.
B.The explanation of the theory.
C.The puzzling evidence of a study.
D.The whole process of the research.
