【单选题】-----Why are you looking pleased? ----Oh, I’ve just had a job _________.
【简答题】小题1:—I’ve decided to pull out the tooth. I can’t stand this pain. —I’m afraid you’ve made a wrong _________(decide). You’d better see the dentist and take his advice. 小题2:—Great changes have taken pla...
【单选题】--I’ve got a pain in my chest and a terrible headache. -- ___________ ? [ ]
C.
Do you feel short of breath
【单选题】香柠檬油可用于化妆品。香柠檬油中含微量的香柠檬酚和香柠檬醚,其结构分别如图。下列说法不正确的是
B.
1 mol香柠檬酚在NaOH溶液中水解时最多消耗2 mol NaOH
C.
可用FeCl 3 溶液来鉴别香柠檬酚和香柠檬醚
D.
香柠檬酚和香柠檬醚均能与溴水反应,但反应类型不完全相同
【单选题】——What’s the matter? ——I’ve got a pain ________ my chest.