长时间关井后井口压力不断升高说明（）。
A.地层压力在不断升高
B.天然气在井内膨胀
C.天然气在井内滑脱上升
D.仪表故障
参考答案：C
. Although I liked the appearance of the house, what really made me decide to buy it was the beautiful _______ from the window.
A．look
B．picture
C．view
D．sight
评价机体糖代谢状况，主要检测______、______、糖化血红蛋白、果糖胺等指标。
