发生溢流后由于井眼周围的地层流体进入井筒致使井眼周围的地层压力（）实际地层压力。
A、高于
B、低于
C、等于
D、高于或等于
参考答案：B
如果(x＋2)(x＋p)的乘积不含一次项，那么p= ．
—How did you find the talk this morning?
—______.
A．By asking my students
B．It was easy to find
C．Very disappointing
D．Just in time for it
