您还没有登录,登录以后才可以查看答疑和进行提问。
1
评分
1
浏览
老师,A为什么正确,不是开头说在1970前就已经被关注了吗。后面也没有时间转折,这些事不就应该是1970前发生的吗
最热提问
-
The author of the passage would most probably agre......
-
The passage implies all of the following EXCEPT......
-
World demand for oil had been intensified, but it ......
-
Although most scientists hold that quantum theory ......
-
The shift from extraction to cultivation in forest......
-
The primary purpose of the passage is to......
-
Quantity A:x Quantity B:y......
-
In light of the decades of dueling studies about w......