______that blood diseases are going to continue, we’ll have to______ them. A.Assumed; doing research atB.Assuming; do research onC.Assuming; do research forD.Being assumed; do research on
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B解析试题分析：第一空考查现在分词做状语，assuming that假定…,第二空考查词组：do research on对…做调查，句意：假设血液病要继续，我们不得不做研究。选B。考点：考查现在分词做状语
点评：英语中有些评述性状语，象：judging by…，assuming that…，generally speaking deng。要熟记。