问题
填空题
完成下面表格:
答案
依据:质子数=核电荷数=核外电子数和质子数+中子数=质量数,阴离子电荷数=核外电子数-核电荷数,阳离子电荷数=核电荷数-核外电子数。
完成下面表格:
依据:质子数=核电荷数=核外电子数和质子数+中子数=质量数,阴离子电荷数=核外电子数-核电荷数,阳离子电荷数=核电荷数-核外电子数。
完形填空。 | ||||
We must face the fact that there are many aspects of the information age. All information makes us anxious. Over some of these, we have little or no control. On the other hand, there are steps we can take to eliminate much of 1 . We might say, then, that survival in the information age is a challenging yet 2 task. To some extent, we are all receivers and givers of information. Our brain, however, receives and processes information in different ways. One way involves the amazing capacity of the brain to process information subconsciously. Another way involves 3 processing of information such as during conversation. We have a great deal of control over this type of information processing -both as givers and receivers. If we indulge (任凭) ourselves talking about tiny things or even harmful information, valuable time and 4 can be wasted. Meanwhile this can make us and others anxious. You may lose opportunities to absorb and distribute information that is truly useful for 5 in this troubled world. Information gathered by reading is processed consciously and 6 takes longest. The written word is still the most powerful way of 7 imagination and conveying information, ideas, and concept. How can we 8 so much information from various sources, such as reading material, TV program, computer games, and other 9 activities? The answer is screening. Screening, sorting out or prioritizing what we need to hear, see, say or read may 10 much information anxiety. To cut through confusing information, 11 this basic rule: Keep it simple! The secret to processing information is narrowing your 12 of information. Simplicity is 13 in many Asian cultures and is even recognized in Western cultures as a superior way of living. Writer Duane Elgin 14 , "To live more simply is to live more purposefully and with a 15 of needless distraction." | ||||
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