阻断H2受体而治疗消化性溃疡的药物是
A．奥美拉唑B．特布他林C．雷尼替丁D．氯苯那敏
参考答案：C
The girl was so ___ that she let out a ___ cry.
A．frightening, frightened
B． frightened, frightened
C． frightening, frightening
D． frightened, frightening
作图题：工作风缸充气止回阀缓解充气状态如何？
