--what have the scientists found?--They've found how fat___and stored.
问题描述:
--what have the scientists found?--They've found how fat___and stored.
A produced B is produced C is producing D has produced 选择哪项?为什么?怎么译?
答
B is produced
——科学家们发现了什么?
——他们发现了脂肪是如何产生和存储的.
描述客观事实用一般现在时.脂肪不是自然而然,而是“被”产生的.应该用被动.