患者男性，42岁，出现肾绞痛，同时可见血尿，该患者可能是
A．膀胱结石
B．肾结核
C．肾肿瘤
D．肾结石
E．肾炎
参考答案：D
已知代数式x+2y的值是3，则代数式2x+4y+1的值是[ ]
A．7
B．4
C．1
D．9
As a wise department manager, he possesses a unique way to ______ huge tasks into small and doable units.
A．break through
B．break away
C．break off
D．break down
