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Many people are disturbed by the genetic diversity of cancers — an inevitable
Many people are disturbed by the genetic diversity of cancers — an inevitable
游客
2025-03-26
29
管理
问题
Many people are disturbed by the genetic diversity of cancers — an inevitable consequence of random evolution. Cancer therapies【C1】______be applied fairly randomly or carelessly, but nowadays many believe that effective therapies need to be【C2】______and tailored to genetic faults in each individual’s cancer.
However, a personalized treatment disregards the most fundamental reason why it is difficult to cure cancers【C3】______: cancer cells adapt and evolve【C4】______treatment. Even drugs that are initially effective often have a【C5】______diminishing effect, as the biological systems blocked by the treatment spontaneously compensate【C6】______re-routing the cancer cells’ internal wiring,【C7】______the cancer’s ability to spread. To use an【C8】______, traffic hot spots in towns can cause major traffic jams, but smart drivers will quickly find other short cuts. Then, in the absence of "short cuts", evolution【C9】______: naturally arising mutant cancer cells that are【C10】______the targeted drug rapidly outgrow their disabled siblings and cancer comes back. [br] 【C7】
选项
A、restoring
B、restored
C、restores
D、restoration
答案
A
解析
该选项考查语法知识。分词doing经常用于主句之后,表示“自然的结果”。常见的动词有cause,increase,kill,leave,make,result,如:The heavy snowfall lasted nearly three hours,causing road accidents and traffic congestion. 大雪持续了将近三个小时,造成了多起交通事故和堵塞。My experiment is not getting on quite well,leaving me disappointed and upset. 实验进行得不顺利,让我很是失望和郁闷。
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