2. 外语
  3. Leptin is effective in reducing weight but it’s many years away before humans can use it. Both obese mice and normal mice have

Leptin is effective in reducing weight but it’s many years away before humans can use it. Both obese mice and normal mice have

admin2013-06-17  48
问题 Leptin is effective in reducing weight but it’s many years away before humans can use it.
Both obese mice and normal mice have the ob gene.
选项 A、Y
B、N
C、NG
答案A
解析 由文中第三段第四句“．．．Friedman．．．pinpointed the ob gene in both average-weight and obese mice”可知这两种老鼠体内都有ob基因。
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