胆固醇结石好发部位是（）。
A.胆总管
B.左、右肝胆管
C.肝内胆管
D.胆囊
E.肝外胆管
参考答案：D
下列岩石依次是沉积岩，变质岩，岩浆岩的是[ ]
A、石灰岩，花岗岩，玄武岩
B、花岗岩，板岩，玄武岩
C、砂岩，片麻岩，花岗岩
D、页岩，石灰岩，花岗岩
It is the test system, ________ the teachers, that is to blame for the heavy burden of middle
school students nowadays.[ ]
A. other than
B. or rather
C. rather than
D. more than
