自然萎凋
参考答案：
利用室内自然气候条件进行萎凋的一种方法。
Up to now, the program ________ thousands of children who would otherwise have died.
A．would save
B．saves
C．had saved
D．has saved
坐立时应自然抬头挺胸端坐，应保持上身挺直，双腿（）放置。
A.交叉
B.前后
C.平行
D.敞开
children who would otherwise have died.