Brains are different from computers, but the analogy can be helpful. Like the PC on your desk, your mind is equipped with two basic types of memory: "working memory" for juggling information in the present moment, and "long-term memory" for storing it over extended periods. Contrary to popular wisdom, our brains don’t record everything that happens to us and then bury it until a hypnotist or a therapist helps us dredge it up. Most of what we perceive hovers briefly in working memory, a mental play space akin to a computer’s RAM, then simply evaporates. Working memory enables you to perform simple calculations in your head or retain phone numbers long enough to dial them. And like RAM, it lets you analyze and invent things without creating a lasting record.
Long-term memory acts more like a hard drive, physically recording past experiences in the brain region known as cerebral cor
A. processing information and recording information.
B. calculation and confirming the calculations.
C. storing information and performing calculations.
D. storing information and processing the storage.
Paper is different from other waste produce because it comes from a sustainable resource: trees. (1) the minerals and oil used to make plastics and metals, trees are (2) Paper is also biodegradable, so it does not pose as much threat to the environment when it is discarded. (3) 45 out of every 100 tonnes of wood fibre used to make paper in Australia comes from waste paper, the rest comes directly from virgin fibre from forests and plantations. By world standards this is a good (4) . since the world-wide average is 33 percent waste paper. Governments have encouraged waste paper collection and (5) schemes and at the same time, the paper industry has responded by developing new recycling technologies that have (6) even greater utilization of used fibre. (7) , industry’s use of recycled fibres is expected to increase at twice the rate of virgin fibre over the coming years.
Already, waste paper (8) 70%
A. materials
B. resources
C. substances
D. sources
我来回答: