问题 填空题

(本题16分)

(1)某化合物结构简式如图,请根据所示的化合物回答问题:

该化合物中,官能团①的名称是________;官能团⑦的名称是________;该化合物是由________个氨基酸分子脱水形成的;写出该化合物水解生成的氨基酸的结构简式(任写一种):________;并写出此氨基酸与氢氧化钠溶液反应的化学方程式:_________________

(2)某有机物含有C、N、H、O四种元素,下图为该有机物的球棍模型。

①该有机物的化学式______________________________。

结构简式______________________________________________________。

②该有机物可能发生的化学反应有(填编号)________。

a.水解 b.加聚c.取代  d.消去e.酯化

③该有机物发生水解反应的化学方程式__________________________________。

答案

(1)氨基 羧基 4 H2N—CH2—COOH

H2N—CH2—COOH+NaOH稀H2SO4H2N—CH2—COONa+H2O

(或另外三种氨基酸及对应的化学方程式)

(2)①C5H11NO2 CH3CH2CONHCH2CH2OH ②acde

③CH3CH2CONHCH2CH2OH+H2OCH3CH2COOH+NH2CH2CH2OH

(1)氨基酸形成肽键时是氨基脱氢,羧基脱去羟基,羧基可与碱发生反应。

(2)根据各原子的成键特点可知,C、N、H、O分别形成4、3、1、2个共价键,由此可得到该有机物的化学式和结构简式。该分子中含有肽键和羟基,可以推知其性质。

完形填空
By my third day in the hospital, I realized Tom didn’t visit. I couldn’t understand  36 my best friend wouldn’t come to see me. Struggling against the   37 , I phoned his __38 . His mother answered, and when I asked for Tom, she got   39  . “He’s not here right now,” she said. I thought it was  40 that she didn’t tell me where he was or  41  to have him call me. But I was so weak, I just let it  42 . I found out later that Tom’s mother called my parents right after we rang   43 . My phone call really made her   44 , and she   45 they talk to me. Later that night, my mom   46 . Did I remember drinking? Did I remember in a car?I had   47  what she was talking about, so she finally told me the news: I’d hit a tree. Tom, in the   48  seat, was thrown from the car and killed instantly. The only reason I’d lived was because of my   49 .
My first   50  was of shock. I’d been drink-driving? Hit a tree? Killed Tom? I felt like the   51  person in the world. Even after I was able to   52 several weeks later, I didn’t want to eat, I didn’t want to talk. I just   53  at the wall in my  54  and cried. The only person I wanted to see was Tom. I didn’t feel like   55  with any of my old friends.
小题1:
A.ifB.whetherC.howD.why
小题2:
A.painB.doctorC.nurseD.wound
小题3:
A.companyB.officeC.schoolD.house
小题4:
A.sadB.quietC.calmD.excited
小题5:
A.unfairB.wrongC.strangeD.unnecessary
小题6:
A.offerB.allowC.permitD.refuse
小题7:
A.downB.aloneC.beD.go
小题8:
A.offB.upC.outD.back
小题9:
A.disappointedB.shockedC.anxiousD.excited
小题10:
A.hopedB.wishedC.insistedD.ordered
小题11:
A.went byB.came byC.called backD.passed by
小题12:
A.understoodB.believedC.no ideaD.wondered
小题13:
A.passengerB.driveC.frontD.spare
小题14:
A.doctorB.friendC.luckD.seat-belt
小题15:
A.viewB.reactionC.actionD.idea
小题16:
A.luckiestB.happiestC.worstD.most lonely
小题17:
A.stand up B.get on C.go homeD.eat out
小题18:
A.lookedB.staredC.glancedD.glared
小题19:
A.sickroomB.officeC.dormitoryD.bedroom
小题20:
A.drying outB.taking outC.setting outD.hanging out
单项选择题