题型:单项选择题 Questions 1-4According to the speaker, what should you try to do once you arrive in your destination?()A.Sleep as soon as possible.B.Nap even during daytime.C.Get a good night’s sleep.D.Relax yourself in a cafe. 查看答案
题型:单项选择题 牵牛花的红花A对白花a为显性,阔叶B对窄叶b为显性。纯合红花窄叶和纯合白花阔叶杂交的后代再与“某植株”杂交,其后代中红花阔叶、红花窄叶、白花窄叶、白花阔叶的比例依次是3∶1∶1∶3,遵循基因的自由组合定律。“某植株”的基因型为()A.AabbB.aaBBC.AaBbD.aaBb 查看答案