题目

现榨的苹果汁在空气中会由浅绿色变为棕黄色，你猜测可能的原因是（ ） A . 苹果汁中含有Cu2+ B . 苹果汁中含有OH﹣ C . 苹果汁中含有Na+ D . 苹果汁中的Fe2+变成Fe3+ 答案：D Peter’s planMonday10:30-11:00Visit Uncle John in HospitalTuesday14:00-16:00Have a music classWednesday13:00-17:00Do a part-time jobThursday10:30-11:30Meet Mr. White15:00-17:30Have a football matchFriday11:00Go to the post office to meet DaveSaturday10:00-12:00Meet Sam to studySunday17:00-19:00Birthday party for Daisy1.Peter did his part–time job for ____________hours a week .A. ten B. five C. six D. four2.Peter was ____________at 15:45 on Thursday .A. doing a part–time jobB. having a football matchC. celebrating Daisy’s birthdayD. studying3. Peter met Dave____________ .A. at the post office B. in the hospitalC. at Daisy’s home D. in Dave’s office4.Which is TRUE according to Peter’s plan ?A. Peter and Dave studied together on Saturday.B. Daisy’s birthday party lasted for 3 hours.C. John stayed in hospital on Tuesday.D. Peter met Mr. White on Thursday morning.