A-A+
Leptin is effective in reducing weight but it'
问题详情
Leptin is effective in reducing weight but it"s many years away before humans can use it.
A．Y
B．N
C．NG请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：本文第一段中“his too early to predict”和“even if”等词已经暗示了作者的观点，而文章最后一句话更加鲜明地指出了“．．．may finally be on the way”。
