除紧急情况外，人身检查必须经( )批准。
A．县级以上公安机关
B．县级以上公安机关负责人
C．市级以上公安机关
D．市级以上公安机关负责人
参考答案：B
_______ that they may eventually reduce the amount of labour needed on construction
sites by 90 percent.[ ]
A. Such construction robots are clever
B. So clever the construction robots are
C. So clever are the construction robots
D. Such clever construction robots are
Can you explain ____ most deserts are located near the west coast of the continents?
A．why is it that
B．why it is that
C．how it is that
D．how is it that
