It took the police a long time to find s
题型：选择题
问题：
It took the police a long time to find some evidence. The new evidence led to _______.
A．the robber having caught
B．catch the robber
C．the robber being caught
D．the robber to be caught
题型：选择题
如图，在内壁光滑截面为矩形的钢槽中，对齐叠放着两根长度和质量都相同，且所受重力均为G，但粗细不同的金属管A和B，金属管外壁也光滑，外半径分别为1.5r和r，槽的宽度是4r．下述分析正确的是（ ）
A．细管B对底面的压力等于2G
B．两管对侧壁的压力均小于G
C．两管之间的压力小于G
D．两管间的压力和对侧壁的压力均大于G
