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  3. 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  4
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] 【C2】
选项 A、specific
B、special
C、especial
D、spacious
答案 A
解析 especial：特别的，特殊的，常用于especially；spacious：宽敞的，空间大的。specific的意义比较多，包括“明确的”，“特有的”，“专门用于治疗某种疾病的"或“有针对性的”。有效的治疗方案应该重视个体差异，最好是因人而异的。
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