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【简答题】
One day, when Jack is taking a walk on the street, he hears a voice. He finds a girl crying in the street. “Why are you crying, little girl?” Jack asks. “I lost my doll,” the girl answers. “Don’t cry, little girl. I’ll go to the shop and buy a new doll for you,” Jack says. So the little girl follows Jack to the shop and Jack buys a very nice doll for her. The little girl begins to feel happy. Then Jack says goodbye to her. But a few minutes later, Jack hears the girl crying again. “Why are you crying again?” Jack asks the little girl. “If I hadn’t lost my doll, I’d have two dolls!” the girl says. 小题1:What is a girl doing in the street? A.She is looking for her doll. B.She is crying. C.She is asking Jack for help. D.She is taking a walk. 小题2:At first, why is the little girl crying? A. Because she lost her doll. B. Because she wants to have two dolls. C. Because she wants a nice doll. D. Both A and B. 小题3:After Jack buys a doll for her, the girl feels ______ . A.sad B.angry C.unhappy D.glad 小题4:Why does the little girl cry again? A.She lost the doll again. B.She don’t like the doll. C.She thinks she should have two dolls, but now she only has one. D.She only has two dolls. 小题5:Which sentence is right? A.Jack knows the little girl. B.Jack buys two nice dolls for the little girl. C.The little girl has two dolls at last. D.The little girl has only one doll at last.
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举一反三
【单选题】烯烃、CO和 H 2 在某种催化剂作用下发生反应生成醛,如: RCH=CH 2 +CO+H 2 RCH 2 CH 2 CHO和RCH(CH 3 )CHO 这种反应称为羰基合成反应,也叫做烯烃的醛化反应。试判断由分子式为 C 4 H 8 的烯烃发生碳基合成反应后,得到的有机产物共有
A.
3种
B.
4种
C.
5种
D.
6种
【简答题】(13分)已知: (1)2ROH R—O—R + H 2 O (R为烃基,R-O-R为醚) (2)RCH=CH 2 +HOCl→RCH(OH)—CH 2 Cl 或 RCH=CH 2 +HOCl→RCHCl—CH 2 OH 试根据下列回答下列问题 (1)(4分)写出结构简式A ________________,C ________________。 (2)(4分)从结构上分析,与A互为同分异构体的可...
【简答题】(10分)已知:(1)2ROH→R-O-R+H 2 O (R为烃基,R-O-R为醚) (2)RCH=CH 2 +HOCl→RCHOH-CH 2 Cl  RCH=CH 2 +HOCl→RCHCl-CH 2 OH 试根据下列回答下列问题 (1)写出结构简式A ________________,C ________________。 (2)从结构上分析,可与A互为同分异构体的结构简式有:________...
【多选题】"1550. 进行货品预检的优点有()。
A.
可以第一时间了解供应商送货是否存在差异,避免差异货品重复装卸、检验等作业
B.
可以掌握该订单是否为已处理订单、过期订单或提前送货订单
C.
将双方的单证进行对比,可以准确地知道到货的实际情况
D.
可以核对货品数量和金额等信息是否一致,降低货品验收时被拒收的可能"
【单选题】根据《中国民航旅客行李国内运输规则》托运行李被损坏或丢失,赔偿金额不超过()元人民币/千克
A.
100
B.
200
C.
300
D.
400
【判断题】为人民服务,既伟大又平凡,既高尚又普通,它并非高不可攀、远不可及,而是可以通过不同层次、不同形式表现出来。
A.
正确
B.
错误
【判断题】根据《中国民航旅客行李国内运输规则》规定,托运行李被损坏或丢失,航空公司承担责任,每千克赔偿金额应低于300元。()
A.
正确
B.
错误
【判断题】夏茶季节,通过遮阳可以改变茶树嫩梢的主要生化成分含量,其中茶多酚含量增加,氨基酸含量降低。
A.
正确
B.
错误
【判断题】烯烃RCH=CH2、CH2=CH2、CH2=CHCl的活性顺序为 RCH=CH 2 < CH 2=CH 2 < CH 2=CHCl 。
A.
正确
B.
错误
【单选题】根据《中国民航旅客行李国内运输规则》,托运行李被损坏或丢失,赔偿金额应低于( )元人民币/千克
A.
100
B.
150
C.
200
D.
250
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