It seems individual cancer cells send out the same distress signals as wo

游客2024-01-23 46

问题       It seems individual cancer cells send out the same distress signals as wounds, tricking immune cells into helping them grow into tumours. The finding suggests that anti-inflammatory drugs could help to combat or prevent cancer. "Lifelong, if you take a small quantity of something that【C1】______ inflammation （炎症）, such as aspirin, it could reduce the risk of cancer," says Adam Hurlstone of the University of Manchester, UK.
   When tissue is wounded or infected it produces hydrogen peroxide. White blood cells called leukocytes （白细胞） are among the first cells to react to this【C2】______  , homing in to kill the infectious agent, clean up the mess and rebuild【C3】______  tissue. At first, the tissue becomes inflamed, but this subsides as the wound is cleared and rebuilding continues. Now, a study in zebra fish shows that this process is also instigated （唆使） and sustained by tumour cells.
   Hurlstone and his colleagues【C4】______  engineered zebra fish so that skin cells and leukocytes would show different【C5】______  under ultraviolet light. Some zebra fish were also engineered to have cancerous skin cells.
   The team found that the cancerous skin cells secreted （分泌） hydrogen peroxide,【C6】______  leukocytes which helped them on their way to become a tumour. When the team【C7】______  hydrogen peroxide production in the zebra fish, the leukocytes were no longer attracted to cancerous cells and the cancer colonies reduced in【C8】______.
   More alarmingly, the researchers found that healthy skin cells【C9】______ to the cancerous ones also produced hydrogen peroxide, suggesting that cancer cells【C10】______ co-opt them into triggering inflammation.
A） adjacent
B） blocked
C） changed
D） colors
E） damaged
F） figure
G） genetically
H） hue
I） hurtful
J） number
K） somehow
L） somewhat
M） summoning
N） suppresses
O） trigger [br] 【C9】

选项

答案 A

解析形容词辨析题。首先根据句子结构可以得知此处是形容词短语作定语修饰前面的名词。然后,根据选项中所给的形容词,再结合句子意义可以推知, adjacent符合原文意思,和to搭配表示“临近”的意思,整个形容词短语表示“临近癌细胞的正常表皮细胞”，因此答案应为adjacent。

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