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  3. Leptin is effective in reducing weight but it’s many years away before humans ca

Leptin is effective in reducing weight but it’s many years away before humans ca

游客2023-07-12  19
问题 Leptin is effective in reducing weight but it’s many years away before humans can use it. [br] Both obese mice and normal mice can produce leptin in their bodies.
选项 A、Y
B、N
C、NG
答案 B
解析 参见第五段第四句：But the obese mice cannot produce leptin．．．
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