商品标准的概念及作用？

下列物质中，不属于电解质的是（　　）

A．蔗糖

B．NaCl

C．NaOH

D．H₂SO₄

同学们去划船，男生23人，女生21人，每4人一条船，一共需要多少条船？

政府的经济职能，是依托( )来完成的。

A．法律法规

B．经济规律

C．宏观调控体系

D．经济政策

所谓信息加工的观点就是将人脑与计算机进行类比，将人脑看作类似于计算机的信息加工系统。但是这种类比只是机能性质的，也就是在行为水平上的类比，而不管作为其物质构成的生物细胞和电子元件的区别。换句话说，这种类比只涉及软件而不涉及硬件。
这段话中“硬件”指代的是( )。

A．机能性质
B．行为水平
C．物质构成
D．生物细胞和电子元件

In every cultivated language, there are two great classes of words which, taken together, comprise 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） n a style appropriately elevated above the habitual（19） f 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.

请在8处填上正确答案（）

A.in public

B.at most

C.at large

D.at best