| We usually think of pollution as a
harmful waste substance that threatens the air and water. {{U}} (1)
{{/U}}some people have become{{U}} (2) {{/U}}about another kind of
pollution. It can be everywhere, depending on the time of day. {{U}} (3)
{{/U}}it is not thought of as a{{U}} (4) {{/U}}. It is
light. The idea of light pollution has{{U}} (5) {{/U}}with the increase of{{U}} (6) {{/U}}in cities. In many areas, this light makes it{{U}} (7) {{/U}}to observe stars and planets in the night sky. In 1922, the International Dark-Sky Association formed. This organization wants to reduce light pollution in the{{U}} (8) {{/U}}sky. It also{{U}} (9) {{/U}}the effective use of electric lighting. Light pollution is the{{U}} (10) {{/U}}of wasted energy. Bright light that shines into the sky is not being used to provide light{{U}} A. concerned B. careful C. considerable D. thankful [判断题]普速铁路，速度小于120km/h区段，瞭望条件大于2000m以上时，钢轨探伤仪、轨道检查仪作业，邻线来车可不下道。
A.正确 B.错误 [判断题]电缆终端套管各相同位置部件温差不宜超过2K
A.正确 B.错误 [单项选择]门（急）诊对中度慢性疼痛患者开具的麻醉药品控缓释制剂，每张处方不得超过（）
A. 1次常用量 B. 3日常用量 C. 7日常用量 D. 15日常用量 [简答题]CTC车站操作方式遇哪些情况，列车进路不能自动触发，系统给出提示，选择强制执行后，方能形成进路？
[简答题]试行居民阶梯电价的必要性是什么？
[单项选择]Everybody here is busy ______ Christmas and buying Christmas presents.
[单选题]根据合同法律制度的规定,当房屋按份共有人行使优先购买权或出租人将房屋卖给近亲属时,房屋租赁的承租人没有优先购买权。下列各项中,( )不属于近亲属范畴。
A.叔叔 B.祖母 C.孙女 D.配偶 [简答题]隔离开关的检修项目有哪些?
[单选题]根据支付结算法律制度的规定，下列票据日期中，属于票据必须记载事项的是（ ）。
A.出票日期 B.背书日期 C.承兑日期 D.保证日期 [多项选择]下列需要大脑皮层参与的是（）
A. 膝跳反射 B. 表演舞蹈 C. 作答试题 D. 朗诵诗歌 [单项选择]我国《商标法》规定，注册商标专用权有一定的时间限制，它的有效期为( )年。
A. 15 B. 10 C. 8 D. 5 [单项选择]右心衰竭的主要体征不包括（）。
A. 两肺湿啰音 B. 肝大 C. 水肿 D. 颈静脉怒张 E. 肝－颈静脉回流征阳性 [判断题]起重气垫具备抗静电、抗裂、耐磨、抗油和抗老化等性能。( )
A.正确 B.错误 [单选题]带电设备附近测量绝缘电阻，( )应与设备的带电部分保持安全距离。移动引线时，应加强监护，防止人员触电。
A.A.测量人员 B.B.绝缘电阻表 C.C.测量引线 D.D.测量人员和绝缘电阻表安放的位置 [单项选择]催收成本较高、单位时间内催收户数有限，但是催收效率较高的催收方式是______。
A. 电子批量催收 B. 以物抵债 C. 人工催收 D. 法律催收 [单选题]移动电话机主机三包有效期为（）年
A.1 B.2 C.3 D.4 [单选题]代谢性酸中毒可引起血钾增高，但在纠正酸中毒后需及时补钾，原因是
A.钾从细胞内转移至细胞外，部分从尿中排出 B.酸中毒纠正后，细胞内、外液H+-K+交换停止，而尿排钾仍在继续 C.钾从细胞外进入细胞内，钾从尿中排出 D.酸中毒时体内总钾实际上并不增高，而是减少 E.为了防止发生代谢性碱中毒 [单选题]Text 4 The EU's faltering progress towards a common system of taxing the huge revenues of the new digital giants lurched forward this morning as Margrethe Vestager,the EU commissioner in charge of competition,declared that Amazon had received unfair state aid from Luxembourg through its tax arrangements,and demanded that it pay￡250m in back taxes.At the same time,Ms Vestager announced that the European commission would haul Ireland up before the European court of justice for its failure to demand￡13bn of unpaid tax from Apple,identi{ied in an earlier investigation.The lwo events illusrrate the gulf between the commission,together with some of the EU's iargest economies,and smaller members such as Ireland and Luxembourg.Both Ireland and Luxembourg defend their tax arrangements.Ireland in particular welcomes the thousands of goocl jobs that the tech giants bring and has no desire to find ways of extracting more tax from thcm in case it drives them away.The Irish government also insists that taxation is a sovereign matter,not an arena for EU interference.（ ）thers are under pressure from voters who are outraged that any company can make so much profit in their country and pay so little tax on it.Revenue from Facebook's UK operations,it has emerged,nearly quadrupled last year t0 842m,through growth in digital ad sales;its corporation tax bill crept up from 4.2m t0 5.Im.The US inland revenue service is also keen to find transparent ways of taxing the new digital economy,and is watching jealously as the European commission draws up its plans,suspicious of any move that might be used by the tech giants to offset their US tax bills.Already,companies such as Google and Amazon hold billions of dollars in offshore funds,where ihey are out of reach of the taxman.The US defensiveness about its own tax revenues points to the need for a global rather than a merely European solution to the question of how,what and whcre to tax the digital economy,but progress through the Organization for Economic Co-operation and Development（OEC
D）is glacial,and would in any event only be advisory.The commission is still hoping to get agreement on a common corporate tax base that would help to identify the parameters of any new tax system,but progress has stalled because of complexities around double taxation.Meanwhile the American Chamber of Commerce in Europe（ACC
E）is warning that any attempt to tax the tech giants more would threaten investment and expansion.But across most of the EU discontent is growing,not just over the failure to pay tax-which has already prompted some tech companies to become more transparent,and even pay more-but over many of their practices.The chief executive of the ride-hailing app Uber has been in London this week trying to patch up relations with Transport for London（TfL）.Margrethe Vestager is right:enforcing regulations works.
Which of the following can help push EU's tax plan forward according to the last paragraph?
A.Firmly carry out current regulations. B.Find a balance between double taxations. C.Carefully consider ACCE's warning. D.Loosen control over some tech giants. [单项选择]以下对正常脾脏描述不正确的是（）
A. 脾是人体最大的内、外分泌器官 B. 位于9-11肋腋前线至腋后线之间 C. 脾实质为均匀的低回声 D. 脾长轴切面类似三角形 E. 脾内侧缘中部内凹处为脾门 [单项选择]以下为准实验设计的是( )。
A. 事后设计 B. 随机区组设计 C. 完全随机化设计 D. 轮组设计 [判断题]（ ）坡度标，设在线路坡度的变坡点处，两侧各标明其所向方向的上、下坡度值及其长度。
A.正确 B.错误 [判断题]TT 系统是配电网中性点直接接地,用电设备外壳也采用接地措施的系统。( )
A.正确 B.错误 [单选题]依据《中国南方电网有限责任公司电力安全工作规程》(Q/CSG510001-2015)第23. 1. 2条规定:在风力超过( )及下雨雪天气时,不可露天进行焊接或切割工作。
A.5级 B.8级 C.10级 D.3级 [判断题]中国特色社会主义法律体系的核心是宪法。( )
A.正确 B.错误 [单选题]259. 以下四个中，()不是音频文件的扩展名。
A.MP3 B.GIF C.WAV D.MIDI [单项选择]Windows系统下可执行的文件名是（）。
A. *.DOC B. *.bmp C. *.EXP D. *.EXE [单选题]公安机关及其人民警察在办理治安案件时,对涉及的(),应当予以保密
A.鉴定结论 B.调查材料 C.商业秘密 D.证据 [单项选择]Lead deposits, which accumulated in soil and snow during the 1960’s and 70’s,were primarily the result of leaded gasoline emissions originating in the United States. In the twenty years that the Clean Air Act has mandated unleaded gas use in the United States, the lead accumulation worldwide has decreased significantly.
A study published recently in the journal Nature shows that air-borne leaded gas emissions from the United States were the leading contributor to the high concentration of lead in the snow in Greenland. The new study is a result of the continued research led by Dr. Charles Boutron, an expert on the impact of heavy metals on the environment at the National Center for Scientific Research in France. A study by Dr. Boutron published in 1991 showed that lead levels in arctic(北极的) snow were declining. In his new study, Dr. Boutron found the ratios of the different forms of lead in the leaded gasoline used in the United States were different from the ratios of Europe A. the Clean Air Act has not produced the desired results B. lead deposits in arctic snow arc on the increase C. lead will stay in soil and snow longer than expected D. the U. S. is the major source of lead pollution in arctic snow [单项选择]亚急性感染性心内膜炎的抗生素治疗原则不正确的是（ ）
A. 早期应用 B. 充分用药，足量 C. 疗程要长，4～6周 D. 只能根据血培养和药物敏感试验用药 E. 联合用药 我来回答: 提交
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