上层疏伐多应用在（）。
A、混交林中
B、针叶林中
C、单层林中
D、纯林中
参考答案：A
同学们去秋游，租了4条大船和6条小船，共用去112元，每条小船租金是8.5元，问每条大船租金多少元？
Companies give their products to film stars fans will buy them.[ ]
A. because
B. because of
C. so that
D. in order to
