A pet is an animal that (21) in your house. Over half the families in North America own pets. The most popular (22) axe dogs, fish and birds. Rabbits, hamsters and turtles are also popular. (23) some unpopular animals such as frogs, mice and snakes are pets.
People first (24) to keep pets about 12,000 years ago. The first pet was a dog. The dog (25) not become a pet because people (26) it was cute. It (27) a pet because it was useful. People used the dog for many things. The dog warned people (28) danger so wild animals didn’t attack people. It also ate leftover food. Later, dogs helped people take care (29) cows and sheep on farms.
Cats did not (30) pets for a long time. When the Egyptians first (31) to grow grain, mice ate it. The Egyptians were (32) to tame cats.
Today, people keep many (33) of pets. Animals such as canaries, parrots, mice and hamsters live
A. first
B. firstly
C. at the first
D. the first
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A. 教育部门，国家域名是edu B. 政府部门，国家域名是cn C. 教育部门，国家域名是cn D. 政府部门，国家域名是edu [多选题]有责投诉要求按“四不放过”的原则是指哪些:( )
A.投诉原因分析不清不放过 B.责任人和其他员工没有受到教育不放过 C.没有制定防范整改措施不放过 D.责任人没有受到处理不放过 [单项选择]第二篇Putting Plants to Work
Using the power of the sun is nothing new. People have had solar-powered calculators and buildings with solar panels for decades. But plants are the real experts: They’ve been using sunlight as an energy source for billions of years.
Cells in the green leaves of plants work like tiny factories to convert sunlight, carbon dioxide, and water into sugars and starches, stored energy that the plants can use. This conversion process is called photosynthesis. Unfortunately, unless you’re a plant, it’s difficult and expensive to convert sunlight into storable energy. That’s why scientists are taking a closer look at exactly how plants do it.
Some scientists are trying to get plants, or biological cells that act like plants, to work as miniature photosynthetic power stations. For example, Maria Ghirardi of the National Renewable Energy Laboratory in Golden, Colo., is working with green algae. She’s trying to trick them into producing hydrogen instead of sugars when
A. They grow faster in a reactor. B. They will be planted everywhere. C. They are cheap to eat. D. They can be a good energy source. [判断题]蓄电池表面及接柱不清洁, 通气孔不通,对蓄电池没有影响。(
A.正确 B.错误 [填空题]牵引变电所发生直流接地故障后,在查找时若必须进行（）试验,其拉断时间不得超过3S.
[单项选择]引起艾滋病感染的病毒是
A. HV B. 白色念珠菌 C. HIV D. 金黄色葡萄球菌 E. HPV [单项选择]Which one of the following may be best used to describe the flexible sys tern
A. Entirely effective. B. Totally incorrect. C. A complete failure. D. Quite difficult. [多选题]一张完整的零件图包括哪几项( )。
A.一组图形 B.完整的尺寸 C.技术要求 D.标题栏 [判断题]遮栏是为防止工作人员无意碰到带电设备部分而装设备的屏护，分临时遮栏和常设遮栏两种。( )
A.正确 B.错误 [单项选择]
男性，40岁，因肝硬化行肝移植术，术后10天出现发热，体温38.8℃，右上腹胀痛。查体：右上腹压痛，无明显肌紧张，WBC18×109/L，血清胆红素88mmol/L，ALT356U/L。 首选的处理为（）。 A. 大剂量皮质激素冲击治疗 B. 切除移植肝，再次肝移植 C. 剖腹探查，摘除门静脉血栓 D. 剖腹探查，修补胆肠吻合口瘘 E. 行血管造影检查 [多项选择]调低存贷款利率，我国适度从紧的货币政策将( )。
A. 放弃 B. 适度从紧 C. 调整力度 D. 力度不变 [单选题]3.282减少用电容量的期限,应根据用户所提出的申请确定,但最长期限不得超过()年。
A.1 B.1.5 C.2 D.2.5 [单项选择]碎屑岩中陆源碎屑的成分包括（）。
A. 矿物碎屑和基质 B. 矿物碎屑和胶结物 C. 矿物碎屑和岩石碎屑 D. 岩石碎屑和胶结物 [单选题]在胀轨跑道故障处两端向中间拨成半径不小于( )米的反向曲线,曲线间夹直线不得短于10米。
A.100 B.200 C.300 D.400 [单项选择]在实际和潜在购买者中所占的比重不大，但他们所消费的商品数量在商品消费总量中所占的比例却很大，这类使用者属于（）。
A. 中度使用者 B. 少量使用者 C. 大量使用者 D. 无法确定 [简答题]试述硬胶囊剂填充药物时应该注意的问题。
[多选题] 484
VRP支持通过哪几种方式对路由器进行配置? A.通过Telnet对路由器进行配置 B.通过FTP对路由器进行配置 C.通过mini USB口对路由器进行配置 D.通过Console口对路由器进行配置 [判断题]在测试钢轨探伤仪的探伤灵敏度余量时，应将仪器增益置最大，抑制置最大。（ ）
A.正确 B.错误 [多项选择]慢性阻塞性肺气肿常见的并发症是
A. 肺心病 B. 肺癌 C. 自发性气胸 D. 咯血 E. 肺不张 [单选题]第261题 （1.0分）
编写如下事件过程. Private Sub Form_Click() Score=Int(Rnd*10)+80 Select Case score Case Is< 60 A$="F" Case 60 To 69 A$="D" Case 70 To 79 A$="C" Case 80 To 89 A$="B" Case Else A$="A" End Select Print a$ End Sub 程序运行后,单击窗体,则窗体上显示的内容是(). A.A B.B C.C D.D [多项选择]患者女，36岁，因“乏力、面色苍白15天”来诊。患者于15天前无明显诱因出现进行性面色苍白、乏力，不能胜任工作，稍动则心悸、气短，尿色如浓茶，实验室检查有贫血（具体不详），患者发病以来无发热、关节痛、脱发、光过敏，进食和睡眠稍差，排粪正常。既往体健，无心、肝、肾、结核病史，无毒物接触史，无药物过敏史，无偏食和烟酒嗜好，月经正常，家族中无类似患者。查体：体温36.5℃，脉搏96次/分，呼吸16次/分，血压110/70mmHg（1mmHg=0.133kPa），一般情况尚可，贫血貌，无皮疹和出血点，全身浅表淋巴结未触及，巩膜轻度黄染，舌乳头正常，甲状腺（－），心、肺无异常，腹平软，肝未及，脾肋下1cm，腹腔积液征（－），双下肢无水肿。处理方法有（）
A. 输血 B. 碱化尿液、利尿 C. 应用糖皮质激素 D. 切脾 E. 环磷酰胺 F. 环孢素 [单项选择]在相同强度等级的水泥中，早期强度最高的是( )。
A. 火山灰水泥 B. 硅酸盐水泥 C. 粉煤灰水泥 D. 矿渣水泥 [单选题]下列哪一项不是理财师日常生活中时间管理小技巧？( )
A.创造良好的办公桌环境 B.养成及时高效的邮件处理习惯 C.进退得宜地处理社交事项 D.有效利用成块时间 [单项选择]
What is it about Paris For the last two centuries it has been the single most visited city in the world. Tourists still go for the art and the food, even if they have to brave the disdain of ticket-takers and waiters. Revolutionaries on the run, artists in search of the galleries and writers looking for the license to explore their inner selves went looking for people like themselves and created their own fields filled with experimentation and constant arguments. Would worldwide communist revolution have been conceivable without the Paris that was home to Marx, Lenin and Ho Chi Minh Would Impressionism or Cubism have become "isms" without Paris as a place to work and as a subject to paint How Paris came to be, for such a long time, "capital of the world" [单项选择]下列有关ITP的描述，哪项是不适当的
A. 脾不大 B. 骨髓巨核细胞数量增多 C. 巨核细胞体积变大 D. 血小板计数减少 E. 出血时间延长 [单选题]接触网回流线在最大弧垂时距居民区及车站站台地面最小距离( )mm。
A.3000 B.4000 C.5000 D.6000 我来回答: 提交
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