只有对水源采取预防性措施,才是保护水源()的措施。
(A)最有效
(B)最经济
(C)最有效、最经济
(D)最有效、最直接
参考答案:C
AST速率法测定时应用的指示酶
A.MDB.LDC.HKD.G6PDE.POD
1) ______the Grammar-Translation Method 2) ______ the Direct Method 3) ______ the Oral Approach 4) ______ the Audiolingual Method 5) ______ the Cognitive Approach a) The neogrammarians, represented by Hermann Paul formed its main linguistic base. b) The structural linguists believed that the primary medium of language is oral, that is language is speech. c) It lays emphasis on the conscious acquisition of language as a meaningful system. d) It can be characterized as a type of British "structuralism". e) It believes in the natural process of language learning and in the inductive teaching of grammar.