問題詳情

第四大題 篇章結構 5% 每題 1 分     Dogs have an amazingly keen sense of smell. ______(56)______ Recently, scientists have begun to examine ways in which dogs’ sharp sense of smell could help detect certain human health problems. ______(57)______ Over the past few years, studies around the world have suggested that dogs may be able to smell chemical differences between healthy and cancerous tissue. For example, Japanese researchers showed that dogs can detect colorectal cancer from sniffing breath samples. A European study found similar results for the case of lung cancer. ______(58)______ Dogs have also been trained to identify ovarian cancer from scents found in blood. Supporters of the research aren’t saying that dogs will someday be placed in clinics to work beside doctors. ______(59)______ More research is needed, but scientists and patients are hopeful about the dogs’ future role in medical care. Now, specialist
dogs are saving the lives of some diabetics by warning them of changes in their blood sugar
levels. ______(60)______
56

參考答案

答案：B
難度：簡單0.75
統計：A(1),B(9),C(1),D(0),E(0)

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