设k是常数，讨论函数f(x)=(2x-3)ln(2-x)-x+k在它的定义域内的零点个数．
查看答案
They are in favor of ______ (采取严格的措施来控制污染).
It’s reported that by the end of this year the output of cars in this factory ______ (将增加大约10%).
好发于长骨干骺端的骨肿瘤是
A. 骨瘤
B. 骨软骨瘤
C. 骨巨细胞瘤
D. 转移性骨肿瘤
E. 内生软骨瘤
The most unusual about David Woods’ suicide is that nobody knew the reason why he did it.
微信支付 
支付宝支付