| Scientists have long believed that
constructing memories is like playing with neurological toys. Exposed to a
barrage of sensations from the outside world, we connect together brain cells to
form new patterns of electrical connections that stand for images, smells,
touches and sounds. The most unshakable part of this belief is that the neurons used to build these memory circuits are depletable resource, like petroleum or gold. We are each given a finite number of cells, and the supply gets smaller each year. That is certainly how it feels as memories blur with middle age and it gets harder and harder to learn new thing A. The old notion of memory is wrong. B. The results of these experiments support the old view of neurons. C. Animals have lost the ability to manufacture new brain parts. D. The new brain cells will disrupt engrams. 更多"In this section there are six readi"的相关试题: [单项选择]
In this section there are six reading passages followed by a total of 20 multiple-choice questions. Read the passages and then mark your answers on your coloured answer sheet. {{B}}TEXT A{{/B}} The development of toothpaste began as long ago as 3000/5000 BC in the ancient countries of China and India. According to Chinese history, Huang-Ti claimed different types of pain felt in the mouth could be cured by sticking gold and silver needles into different parts of the jaw and gum. h was theories such as these that led to the development of dental cream. During the years 3000/5000 BC, Egyptians made toothpaste using a recipe of powdered ashes of hooves of oxen, myrrh, powdered and burned eggshells and pumice. It is assumed that the ancient Egyptians used their fingers to rub the mixture onto teeth. The tooth stick, the forerunner of the toothbrush, had not, as far as is known, been discovered at A. Methods of cleaning teeth. B. Methods of caring for teeth. C. Development of toothpaste. D. Dental history. [单项选择] 1 {{B}}Directions: {{/B}}{{I}}After reading the following passage, you will find 5 questions or unfinished statements, numbered 36 to 40. For each question or statement there are 4 choices marked A), B), C) and D). You should make the correct choice and mark the corresponding letter on the Answer Sheet with a single line through the centre.{{/I}}
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