A-A+
The author does not state clearly but implies
问题详情
The author does not state clearly but implies that in the development of man ______.
A．human speech developed along with other human faculties
B．picture language and written language developed side by side
C．oral language preceded the use of fire
D．the ape might be taught to master speech
参考答案
正确答案：A
解析：关于B和C，文章中没有论述，也没有给我们暗示信息，所以推断不出来。D选项在文章第三段中已经明确表示不可能。“．．．but even the highest apes have not been found able to pronounce words，even with the most intensive professional instruction．”所以A是正确答案。
