等差数列|an|前9项的和等于前4项的和。若a1=1,ak+a4=0,则k=(

题型:填空题

问题:

等差数列|an|前9项的和等于前4项的和。若a1=1,ak+a4=0,则k=(    )。

考点:等比数列的前n项和
题型:填空题

关于咳嗽的药物治疗

剧咳宜首选的非处方药是

A.右美沙芬
B.可待因
C.苯丙哌林
D.喷托维林
E.羧甲司坦

题型:填空题

当保税货物的最终去向确定为内销,当事人应补交税款,因为保税进出口货物的一个主要特征就是暂缓办理纳税手续。()

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I was in my parked car, holding a book and reading. Once in a while I looked up, watching the people passing by. When I raised my    35   again, I saw an old lady with a large bag walking slowly towards my car. The bag seemed not only to make her steps    36  , but also make her out of breath. She looked tired and I thought she must be more than 70 years old.
She stopped and put a hand out to rest    37   it, gently (轻柔地,徐缓地) closed her eyes and took a deep breath.
Was there a way I could do something? I tried to keep my body still while my mind    38   for answers. However, because of my careless head movement, she noticed me, and she    39  moved her hand away from the car. I picked up a bottle of water at once, gently opened the door and offered the bottle to her. She    40   me, and then shook her head and walked away.
I was so    41   with myself. I should have been more careful not to move. Instead of    42   a hand, I had interrupted (打扰,中断) the old lady’s    43   moment of rest. I was feeling blue. Just at that moment, I saw the lady coming back again. I opened the door and patted (轻拍) the    44   next to me. She sat down, opened her bag and offered me a banana. I took it and offered her the bottle of water again. She took it.
I ate, she drank and we smiled. She    45   for a couple of minutes. Those minutes brought such quietness to me. Then she took my head in both her hands, made a small kissing    46   in the air, opened the car door and walked away.
I was trying to help someone in distress (困苦,苦恼). In turn, I became distressed and she took away my distress and replaced it with quietness.
小题1:
A.handB.armsC.headD.eyes
小题2:
A.heavy B.largeC.quickD.usual
小题3:
A.inB.overC.underD.against
小题4:
A.paidB.caredC.askedD.searched
小题5:
A.softlyB.quicklyC.strangelyD.thankfully
小题6:
A.looked atB.looked afterC.listened toD.waited for
小题7:
A.lonelyB.angryC.worriedD.surprised
小题8:
A.holdingB.takingC.givingD.showing
小题9:
A.sadB.quietC.magic D.proud
小题10:
A.bedB.floorC.chairD.seat
小题11:
A.sleptB.talkedC.restedD.listened
小题12:
A.soundB.voice C.musicD.note
题型:填空题

根据宪法第60条之规定,全国人大常委会必须在全国人大任期届满的法定时间以前完成下届全国人大的选举。这个法定时间是下列选项中的哪一项?( )

A.2个月

B.3个月

C.1个月

D.6个月

题型:填空题

下表中除去杂质的方法正确的是( )

选项物质杂质试剂主要操作
ASiO2Fe2O3HCl过滤
BNa2CO3NaClBaCl2过滤
CCH3CH2OHH2ONa蒸馏
D碘水Br2CCl4萃取

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