—Will you please give the dictionary to Jane?
—Sure. I'll give it to her ________ she arrives here.
A:before
B:so that
C:because
D:as soon as
埃及的阿斯旺大坝建成后,尽管改善了电力和灌溉条件,取得了明显的经济效益,但巨大的水库沿岸水草丛生,使血吸虫发病率高达80%~100%,尼罗河下游农田失去了肥源等,这说明该工程( )