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【单选题】
中国人民银行决定，自2015年10月24日起，下调金融机构人民币贷款和存款基准利率，以进一步降低社会融资成本。其中，金融机构一年期贷款基准利率下调0.25个百分点至4.35%；一年期存款基准利率下调0.25个百分点至1.5%。央行此举对经济发展可能产生的影响是（） ①物价总水平下降，消费需求扩大②储蓄实际收益减少，银行利润增长 ③激发资本市场活力，刺激经济增长④国内消费需求扩大，促进市场繁荣A.
①②
B.
③④
C.
②④
D.
①③
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【单选题】下列有关钠的叙述正确的是（ ） ①钠在空气中燃烧生成氧化钠 ②金属钠可以保存在石蜡油或煤油中 ③钠在自然界中以化合态形式存 ④钠投入硫酸铜溶液中反应生成单质铜．
A.
②④
B.
①②③
C.
②③
D.
②③④
【单选题】下列有关钠的叙述正确的是 ①钠在空气中燃烧生成氧化钠 ②金属钠可以保存在石蜡油或煤油中 ③钠投入食盐溶液中可以发生反应 ④钠投入硫酸铜溶液中反应生成单质铜 ⑤钠在自然界中以化合态形式存在（ ）
A.
②④⑤
B.
①②③
C.
②③⑤
D.
②③④
【简答题】请根据给出的信息设计一份英语的云南地区旅程,请上传文本或图片。 Suppose you are an English tour guide in Yunnan Province. Please write a travel itinerary of 8-day tour in Yunnan. The following points should be included. DAY 1 Kunm...
【简答题】语篇填空 My Travel Experience in China During the summer holidays I visited a variety of regions in China . My first stop was Beijing and of course the Great Wall . Without question it lived up to my 1 . ...
【单选题】下列有关钠的叙述正确的是（ ） ①钠在空气中燃烧生成氧化钠 ②金属钠可以保存在煤油中 ③钠与硫酸铜溶液反应，可以置换出铜 ④金属钠有强还原性 ⑤钠原子的最外层上只有一个电子，所以在化合物中钠的化合价显+1价．
A.
①②④
B.
②③⑤
C.
①④⑤
D.
②④⑤
【多选题】Task Reading: 下面是今年部分旅游线路介绍及想出游人的兴趣特点介绍.请阅读相关信息并根据出游人的兴趣特点帮他们选择合适的旅游线路。请将答案的字母编号写在答题卷标号为52-55的横线上。 Here is a selection of the tours organized for the coming year:
A.
8 days mountaineering trip--climb Yunnan's third highest peak, the Haba snow mountain. This is ideal for the truly adventurous. You need to be fit and healthy.
B.
8 days cycling tour from Qiaotou Town--visit the spectacular Tiger Leaping Gorge. It is a leisurely tour suitable for anyone who is reasonably fit and healthy. No previous cycling experience is necessary and all our routes are on flat land!
C.
8 days river rafting--white water adventure on the Yangtze from the old town of Lijiang. This adults-only tour is exclusively for good swimmers and physically fit.
D.
10 days rainforest trek(乘牛车旅行)--spend 5 days in the forest and meet the local people. This is a walking tour and no previous experience is needed, just a curious mind and an interest in traditional cultures.
E.
10 days horse trekking tour--visit authentic Tibetan villages of Shangri-la. The ultimate horse-riding experience in a spectacular mountain environment. This trip is for confirmed riders only. Don't expect three-star hotels on this trip. 请阅读以下有出游意向的人的要求，然后匹配旅游线路所适合的出游者。 52. _______ A family of four, including parents, a sixteen-year-old son and a thirteen-year-old daughter, who are looking for a fun holiday. All four are good riders and strong swimmers. 53. _______ A retired couple who are reasonably fit and who want to find out more about ethnic minorities' cultures. 54. _______ A group of four young adults who are into all extreme sports and are looking for something with plenty of excitement. They are more interested in the scenery than in the life style of the locals. 55. _______ A family of five including a ten-year-old girl. They have many different interests and they are looking for a relaxing holiday.
【单选题】下列有关钠的叙述正确的是 [ ] ①钠在空气中燃烧生成氧化钠 ②金属钠可以保存在石蜡油或煤油中 ③钠可以与食盐溶液反应 ④金属钠有强还原性，弱氧化性 ⑤钠不能置换出金属活动性顺序表中钠后面的金属
A.
②④
B.
②③
C.
②③⑤
D.
②③④
【简答题】请用中文简要描述一个你近期做的决定的机会成本。
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