Books in European libraries last longer than books in libraries in the United States because, although the climate in Europe is fairly humid, libraries there are not subjected to the extremes of temperature and humidity that damage collections in the United States.
Books in European libraries last longer than books in libraries in the United States because, although the climate in Europe is fairly humid, libraries there are not subjected to the extremes of temperature and humidity that damage collections in the United States.
Abecause, although the climate in Europe is fairly humid, libraries there are not subjected to the extremes of temperature and humidity that
Bbecause, although the climate in Europe is fairly humid, libraries there are not subject of the extremes of temperature and humidity as those that
Cbecause, although the climate in Europe is fairly humid, libraries there are not subjected to the extremities of temperature and humidity as
Dbecause the climate in Europe is fairly humid, but still libraries there are not subject of the extremes of temperature and humidity as
Ebecause the climate in Europe is fairly humid, but libraries there are not subjected to the extremities of temperature and humidity such as those that
Books in European libraries last longer than books in libraries in the United States because, although the climate in Europe is fairly humid, libraries there are not subjected to the extremes of temperature and humidity that damage collections in the United States. 把我标记的插入部分忽略掉~ 句子是不是明白一些呢~
还有一点要注意, because 后面要跟句子, 如果说只有although这个分句,是不完整的。 because..., 主句。 千万不能少了主句~ (这个额外的一个提醒)
DE选项是逻辑错误, BECAUSE后面不构成说明前面主句的原因~ 所以肯定不对。