A. the hypothesis is true for acquiring the vocabulary B. the hypothesis is true for acquiring the grammar C. researchers hold different views towards the hypothesis D. researchers agree on the hypothesis 参考答案:C 答案解析:推断题。第一段有这样一句话:...No definite answer to this hypothesis has been found and it is still debate
A. sharks can discover a diver by the movement of his hands in water B. sharks have very strong sense of smell C. sharks have poor eyesight D. sharks are great threats to divers 参考答案:C
第31题:[填空题]<br><br><br/>参考答案:the:to be deleted 答案解析:“wealth”为“all goods and re- sources having economic value,”是一种泛指状态,故应省略the。从下一句中的“that flow of wealt