单项选择题 （B） The surprising experiment I am about to describe proves that air is all around you and that it proves down upon you. Air pressure is a wonderful force. When you swim underwater, you can feel water push down your body. The air all around you does the same. However, your body is so used to it that you do not notice this. The pressure is caused by a layer of air called the atmosphere. This layer surrounds the Earth, extending to about five kilometers above the Earth’s surface. The following experiment is an easy one that you can do at home. But make sure that you are supervised, because you will need to use matches. Now foe the experiment！ What you need ?A hard-boiled egg without the shell ?A bottle with a neck slightly smaller than the egg ?A piece of paper ?A match Metheod 1） Check that the paper will sit firmly on the neck of the bottle. 2） Tear the paper into strips and put the strips into the bottle. 3） Light the paper by dropping a burning match into the bottle. 4） Quickly sit the egg on the neck of the bottle. Result Astonishingly, the egg will be sucked into the bottle. Your friends will be amazed when you show them the experiment. But be careful when you handle matches. Why it happened As the paper burns, it needs oxygen and uses up the oxygen （air） in the bottle. The egg acts as a seal in the neck of the bottle, so no more air can get inside. This reduces the air pressure inside the bottle. The air pressure must equalize, so more air from outside must enter the bottle. The outside air pressure against the egg and then the egg is pushed into the bottle! The proves that air is all around and that it is pressing down on it. 60. Why is there the need to take care when you are doing the experiment? A. The bottle could break. B. You need to light the paper with a match. C. The egg needs to be shelled. D. The egg has to be perfectly placed on the neck of the bottle.
问答题 某实施监理的工程，建设单位与甲施工单位签订施工合同，约定的承包范围包括A、B、C、D、E五个子项目，其中，子项目A包括拆除废弃建筑物和新建工程两部分，拆除废弃建筑物分包给具有相应资质的乙施工单位。工程实施过程中发生下列事件：事件1：由于拆除废弃建筑物的危险性较大，乙施工单位编制了专项施工方案，并组织召开了有甲施工单位与项目监理机构相关人员参加的专家论证会。会后，乙施工单位将该施工方案送交项目监理机构，要求总监理工程师审批。总监理工程师认为该方案已通过专家论证，便签字同意实施。事件2：建设单位要求乙施工单位在废弃建筑物拆除前7日内，将资质等级证明与专项施工方案报送工程所在地建设行政主管部门。事件3：受金融危机影响，建设单位于2010年1月20日正式通知甲施工单位与监理单位，缓建尚未施工的子项目D、E。而此前，甲施工单位已按照批准的计划订购了用于子项目D、E的设备，并支付定金300万元。鉴于无法确定复工时间，建设单位于2010年2月10日书面通知甲施工单位解除施工合同。问题：1．指出事件1中的不妥之处，写出正确做法。2．指出事件2中建设单位的不妥之处，写出正确做法。3．事件3中，建设单位是否可以解除施工合同？说明理由。如果甲施工单位不同意解除合同而继续子项目D、E的施工，项目监理机构应做哪些工作？4．事件3中，若解除施工合同，根据《建设工程监理规范》，甲施工单位应得到哪些费用补偿？
单项选择题 第三部分 阅读理解（共20小题；每小题2分，满分40分） 阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。 （A） Outside her shabby cottage, old Mrs. Tailor was hanging out laundry on a wire line, unaware that some children lay hidden in the leaves of a nearby tree watching her every move. They were determined to find out if she really was a witch. They watched as she took a broomstick to clean the dirt from her stone steps. But, much to their disappointment, she did not mount the broomstick and take flight. Suddenly, the old lady’s work was interrupted by the cackling of her hen—a signal that an egg had been laid in the warm nest on top of the haystack. The old broomstick was put aside as she hobbled off towards the haystack followed by Sooty, a black cat she had rescued from a fox trap some time back. With only three legs, it was hard for Sooty to keep up with the old lady. The cat provided proof—the children were sure that only a witch could own a black cat with three legs. There, standing on a wooden box, was Mrs. Tailor, stretching out to gather her precious egg. Taking the egg in one of her hands, she began to climb down when, without warning, the box broke and the old lady fell. “We have to got and help her,” whispered Amy. “What if it is a trick?” replied Ben. “Don’t be silly, Ben. If she were a witch, she would have turned us into frogs already,” reasoned Meg. “Come on Amy, let’s go.” The girls climbed down the tree and ran all the way to the haystack. Approaching carefully, they could see a wound on the old lady’s face. She had knocked her head on a stone and her ankle was definitely broken. “Go and get Dad,” Amy yelled to her brother. “Tell him about the accident.” The boys did not need another excuse to leave. They ran as fast as thy could for help, hoping that Mrs. Tailor would not wake and turn the girls into frogs. 56. Were the children hiding in the tree? A. They wanted to watch Mrs. Tailor do her housework closely. B. They were playing a hide-and-seek game C. They wanted to find out if the rumors about Mrs. Tailor were true D. They were pretending to be spies