What does the writer mean by saying "we pay for our sensitivity" in the first paragraph?
A.We have to take care of our sense of pain.
B.We suffer from our sense of feeling.
C.We should try hard to resist pain.
D.We are hurt when we feel pain.
第2题
下列哪项是恶性肿瘤诊断的主要依据
A.肿瘤的边界不清
B.肿瘤切除后复发
C.肿瘤发生转移
D.肿瘤出血坏死
E.肿瘤突然生长迅速
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