6. Until the current warming trend exceeds therange of normal climatic fluctuations, there will be, among scientists,considerable----the possibility that increasing levels of atmospheric CO2 cancause long-term warming effects.
(A) interest in
(B) uncertainty about
(C) enthusiasm for
(D) worry about
(E) experimentation on
答案选B。
解释说现在发生问是效应,until暗示之前,所以是不确定的可能性。我想问的是既然是“there will be”了,不应该是“current warming trend”之后的事情吗?求助各位,谢谢解答。
there will be, among scientists,considerable ---- the possibility that increasing levels of atmospheric CO2 cancause long-term warming effects.
这部分才是主句,前面的 until 开头的,是从句。
句子变形成这样
There will be, among scientists,considerable ---- the possibility that increasing levels of atmospheric CO2 cancause long-term warming effects, until the current warming trend exceeds the range of normal climatic fluctuations.
科学家对于大气中的 CO2 对长期 warming 的影响是不确定的,直到(until) blahblah. 时间顺序显而易见。