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. In Line 7, the word "which" refers to______
查看答案
搜索结果不匹配？点我反馈
更多问题
面向对象的开发方法中， (52) 是面向对象技术领域内占主导地位的标准建模语言，用这种语言描述系统与外部系统及用户之间交互的图是 (53) 。
地方性卫生法规是由______依法制定的，效力不超出______的卫生方面的规范性文件。
University Awards The BA (or Bachelor of Arts) and the BSc (or Bachelor of Science) are also called " (1) ". Some British universities offer 4-year courses for foreign students which are made up of one (2) year plus three years of degree courses. Diploma courses are usually more narrowly (3) and more professionally (4) . Over the past twenty years, a large number of additional Master degrees have been introduced which combine a quite small piece of research with a (5) amount of course work. The PhD (or Doctor of Philosophy), is only awarded for a piece of research which shows great depth and considerable (6) . The honorary degrees are actually given to people who have (7) themselves in some field of (8) activity outside. Course examinations can be divided into objective and subjective test. The objective test is considered to be a good test of (9) knowledge. The subjective tests are always in the forms of essays and (10) .
根据我国现行卫生行政管理法规的规定，主要包括______和______。
微信支付 
支付宝支付