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1、Day 5Passage 1 Your brain controls everything you do. It makes it possible for you to think, learn, create and feel; to blink(眨眼) and breathe and for your heart to beatthis fantastic control center is your brain. 1._Can this small grey organ(器官)，which weighs less than one and a half kilos, really do
2、 so much? Amazingly, your brain contains about 100 billion neurons(神经元）it would take you over 3,000 years to count them all. 2._ Your neurons create and send more messages than all the phones in the world. And although one neuron creates only a little electricity, all your neurons together can produ
3、ce enough electricity to power a light bulb(灯泡).So exactly how fast does your brain work? 3._ Neurons in your skin send this information to your brain at a speed of more than 240 kilometers per hour. Your brain then uses other neurons to send the message back to your foot to shake the bee off quickl
4、y. 4._ No computer has your brains unbelievable ability to deal with the amount of information coming from your eyes, ears and other sensory organs. But how does your brain allow you to learn things that you will use in the future? The structure(结构) of your brain changes every time you have a new th
5、ought, remember or learn something. 5._ How? As you practice, your brain sends “bike riding” messages again and again. Soon, the actions are learnt and you are able to ride a bike easily from then on.A. Well, imagine this: a bee lands on your foot.B. Therefore, it is not surprising to see that someb
6、ody with average intelligence (智力) can have excellent performances in some fields.C. Believe it or not, the activity in your brain never stops.D. It is so amazing that a famous scientist once called it “the most complex (复杂) thing we have yet discovered in our universe”.E. The brain is the boss of t
7、he bodyF. These neurons can send this information at more than 320 kilometers per hour. G. For example, riding a bike seems impossible at first, but soon you are able to do it.Passage 2 You have been thinking about it all week. It kept you awake last night. Now, as you walk to the front of the class
8、, your throat is dry and your stomach feels funny 1. _. However, by making a small preparations and rehearing(预演)carefully, you can be a public speaking star, too.2._. Being excited about your topic is necessary for all the good speeches, so it's important to choose carefully. If you enjoy your
9、topic, your audience(观众) will, too. Even if you are given a topic, try to find something about it that it is exciting or funny. Next do some research. Don't just research your topic. 3._. If you can, study videos of a great speaker to see how they move, speak, and pause(停顿). Copying their style
10、will help you to write a great speech.After researching, its time to write your speech. During this stage, think of your audience all the time. 4. _. It helps you relax if you know that your audience is enjoying your speech.Finally, rehearse. You really need to rehearse a lot. Measure your speech wi
11、th a watch, and practice in front of a mirror (镜子). 5 ._. If you have followed all these steps, you should be ready for your audience. Good luck!A. You are a very successful speaker.B. Research some great speakers as well.C. Entertaining your audience is important.D. Start by choosing a topic that y
12、ou are interested in.E. Research is very important for writing a great speech.F. Many students find it difficult to give a public speech.G. You can check your hand movement and facial expression.答案Passage 11. D 【解析】根据本段首句“Your brain controls everything you do.”可知本段与人脑神奇的功能相关。结合备选项可知D项与前句衔接，故选D。2. C
13、【解析】根据前句“Amazingly, your brain contains about 100 billion neurons(神经元）.”及后面涉及到的“神经系统传递的信息量之大”可知人脑不停地在运作，故选C。3. A 【解析】根据前句的问题“So exactly how fast does your brain work?”及后句“人脑通过其他的神经元给脚部传输信息，然后快速地把蜜蜂赶走”可知此处以蜜蜂趴在人的脚上为例来证实人脑的工作速度有多快。结合备选项可知A项与后句衔接，故选A。4. F 【解析】根据后句“No computer has your brains unbelievable ability to deal with .”可知本句与传输信息的能力相关。结合备选项可知F项与后句衔接，故选F。5. G 【解析】根据后句“As you practice, your brain sends bike riding messages again and again. 可知本句与骑自行车相关。结合备选项可知G项与后文衔接，故选G。Passage 2FDBCG