现有盐酸和CaCl2的混合溶液，向其中逐滴加入过量某物质X，溶液的pH值随滴入X 发布时间：2017-07-02 22:34 │ 来源：www.tikuol.com 题型：选择题 问题： 现有盐酸和CaCl2的混合溶液，向其中逐滴加入过量某物质X，溶液的pH值随滴入X的量的变化关系如右图所示。则X是A．水B．澄清石灰水C．纯碱溶液D．稀盐酸
题型：选择题 阅读理解。 Su Hua is studying at Cambridge, UK. She has bought a bicycle and is worried about security ( 安全). Her friend, Kate, found this article and sent it to her. Introduction A lot of crime is against bicycles. About 150,000 bicycles are stolen every year and most are never found. You can prevent this happening by following a few careful steps. Basic Security Do not leave your bicycle in out-of-the-way places. Always lock your bicycle when you leave. Secure it to lampposts or trees. Take off smaller parts and take them with you, for example lights and saddles (车座). Locks Get a good lock. There are many different types in the shops. Buy one that has been tested against attack. Ask for a recommendation from a bike shop. Marking Security marking your bike can act as a deterrent to a thief. It can also help the police find your bicycle. It should be clearly written and include your postcode and your house or flat number. This will provide a simple way to identify your bicycle. Registration There are a number of companies who will security mark your bicycle for you. They will then put your registration number and personal details on their computer database. Then if your bicycle is found it will be easy to contact you. Finally Keep a record of the bicycle yourself： its make, model and registration number. You can even take a photograph of it. This will prove the bicycle belongs to you.1. Which part of the text gives you information on how to lock up your bicycle when you leave it? A. Locks. B. Marking. C. Registration. D. Basic Security.2. The underlined phrase “act as a deterrent to a thief” means ______.A. help you recognize your bikeB. help the police find your bicycleC. stop someone stealing your bicycleD. stop you worrying about your bike 3. The article advises you to keep a record of your bicycle _______.A. in the bike shop and your computerB. in the police station and a security companyC. in a security company and your universityD. by yourself and in a security company 4. The main purpose of this article is _________.A. to tell you what to do if your bicycle is stolenB. to suggest ways of keeping your bicycle safeC. to give you advice on where to buy a good lockD. to say why you shouldn’t keep your bicycle in a quiet place 查看答案
题型：选择题 管理层就持续经营能力可能提出相应的应对计划和其他环节措施，注册会计师可能会对此进行评价，下列各项中，注册会计师可以关注的有（）。A.对于管理层拟处置的资产，确定支持证据的充分性B.对于被审计单位的重组债务，确认其授信合同的存在性、条款和充分性C.对于增加权益资本计划，考虑其可行性D.对于缩减或延缓开支计划，确定缩减或延缓开支的直接或间接影响 查看答案
题型：选择题 针对学生科学素养发展的不同阶段，设计与之相适应的教学目标，应依据《义务教育化学课程标准（2011年版）》中的（），结合学生的已有经验对主题、单元教学目标和课时教学目标进行整体设计和规划。A.课程性质B.课程基本理念C.课程目标和课程内容D.课程设计思路 查看答案
