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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  82
问题 Leptin is effective in reducing weight but it’s many years away before humans can use it. [br] Dr. Friedman never found the gene that was believed to control weight. Instead, he found leptin.
选项 A、Y
B、N
C、NG
答案 B
解析 文中说“Friedman．．．pinpointed the ob gene”(见文章第三段第四句)。可知Dr．Friedman已经找到了ob gene。
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