煤气的主要成分是什么?
参考答案:
煤气的主要成分是CO、H2、CH4、CO2、O2、N2、CnHm。
In every cultivated language there are two great classes of words which, taken together, comprises the whole vocabulary. First, there are those words (1) which we become acquainted in daily conversation, which we (2) , that is to say, from the (3) of our own family and from our familiar associates, and (4) we should know and use (5) we could not read or write. They (6) the common things of life, and are the stock in trade of all who (7) the language. Such words may be called "popular", since they belong to the people (8) and are not the exclusive (9) of a limited class.
On the other hand, our language (10) a multitude of words which are comparatively (11) used in ordinary conversation. Their meanings are known to every educated person, but there is little (12) to use them at home or in the market-place. Our (13) acquaintance with them comes not from our mother’s (14) or from the talk of our school-mates, (15) from books that we read, lectures that we (16) , or the more (17) conversation of highly educated speakers who are discussing some particular (18) in a style appropriately elevated above the habitual (19) of everyday life. Such words are called "learned", and the (20) between them and the "popular" words is of great importance to a right understanding of linguistic process.
16()
A. hear of
B. attend
C. hear from
D. listen
目前外币报表折算的目的主要是()。
A.提供特种财务报表,帮助报表使用者理解
B.满足控股公司编制合并报表的需要
C.为编制集团公司汇总报表的需要
D.满足记账本位币核算的需要