In this university a medal with five thousand dollars _____ achieved success in science and technology every

two years. [ ]

A. is given to no matter who

B. is given to whoever

C. are given to anyone who

D. gives to whomever

双套囊充气并阻断左侧时，双肺都无呼吸音（）
双套囊充气，阻断右侧时右肺可闻呼吸音，阻断左侧时左肺可闻呼吸音（）
套囊充气，阻断右侧时左肺可闻呼吸音，右肺无呼吸音；阻断左侧时左肺可闻呼吸音，右肺无呼吸音（）

A.插入左支气管太深

B.插入右支气管太深

C.导管脱出

D.导管在气管内

E.左双腔支气管内导管插入右侧