题目内容
Having no language, infants cannot be told what they need to learn. Yet by the age of three they will have mastered the basic structure of their native language and will be well on their way to communicative competence. Acquiring their language is a most impressive intellectual feat. Studies of how children learn language generally agree that the most remarkable aspect of this feat is the rapid acquisition of grammar. Nevertheless, the ability of children to conform to grammatical rules is only slightly more wonderful than their ability to learn words. It has been reckoned that the average high school graduate in the United States has a reading vocabulary of 80,000 words which includes idiomatic expressions and proper names of people and places. This vocabulary must have been learned over a period of 16 years. From the figures, it can be calculated that the average child learns at a rate of about 13 new words per day. Clearly a learning process of great complexity goes on at a rapid rate in children. According to the passage, what is impressive about the way children learn vocabulary
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Frankly (speak) ______ , I don’t think your plan is practical.
What is this news mainly about
安装工人工资等级系数表中，4.8级工的折算系数是1.8387。( )
Once upon a time (not very long ago, either!) industrial goods were made to last forever. If you bought a car or a stove, it was a once-in-a-lifetime investment. You paid good money for it, and you took care of it. Nowadays industry has persuaded us that products shouldn’t last a long time. It’s cheaper to throw them away than it is to repair them. This has led directly to the "throw-away society" which is a tremendous waste of the earth’s resources. Just think of the cars that are traded in daily, just because they are out of date. Think of the expensive packaging material that is thrown away every time a new object is bought. And we consumers have to pay for that material! Our industrial society has turned us into spoiled children. This wastefulness has gotten us into the mess we are in now. When we have no resources left, then we’ll start to take care of what we have. But why can’t we act before this happens Why can’t we go back to being a society in which the prevention of waste is a virtue According to the author, we should take care of what we have ______
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