the whole process for the studies of cancer took more than a year, the technology is moving so fast that it will soon take just weeks．
A．HowB．BecauseC．If　　　　　D．While
D

試題分析：句意：雖然研究癌癥的整個(gè)過程已經(jīng)耗時(shí)近一年多，但是技術(shù)發(fā)展如此之快以至于很快就用不了幾周的時(shí)間就有進(jìn)展了。How 怎樣，引導(dǎo)方式狀語從句；Because因?yàn)椋龑?dǎo)原因狀語從句；If引導(dǎo)條件狀語從句；While 當(dāng)….時(shí)，盡管，引導(dǎo)讓步狀語從句。
考點(diǎn): 考查連詞的用法。
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