圆x2+y2=1与直线y=kx+2没有公共点的充要条件是______。A.k∈(-，)B．k∈(-∞，-)∪(，+∞)C．k∈(-，)D．k∈(-∞，-)∪(，+∞)

图甲是某实验小组的同学通过实验作出的电源E的路端电压U与电流I的关系图像，图乙是该实验小组的同学通过实验作出的小灯泡L的I-U图像。下列说法中正确的是（ ）。

某病人验尿时发现尿中有血细胞，可能的原因是______。

设计任务：请阅读下面的学生信息和语言素材，设计25分钟的英语阅读教学方案。教案没有固定格式，但须包含下列要点： ● Teaching objectives ● Teaching contents ● Key and difficult points ● Major steps and time allocation ● Activities and justifications 教学时间：25分钟 学生概况：某城镇普通中学高中一年级学生，班级人数40人。多数学生已经达到《普通高中英语课程标准(实验)》五级水平。学生课堂参与积极性一般。 语言素材： Franklin's Famous Kite Experiment In the eighteenth century, Benjamin Franklin conducted a number of experiments in which he showed what electricity is. Here is how he described one of his experiments. In June 1752, I wanted to show that lightning and electricity are the same. Having realized that I could use a kite to attract lightning, I decided to do an experiment. I built a strong kite and waited for bad weather. When the first thunderstorm came, I took my condenser to a shed in the fields where I could do my experiment. My son helped me fly the kite. The kite flew high in the rainy sky, but nothing happened. I was beginning to think that the experiment would not work. Just then, I saw some of the hairs on the string stand up. The string was getting charged! I brought my finger close to the key and felt a light but very clear electric shock. Others followed even before the whole string was wet, and l was able to collect and store a great deal of electricity in the condenser. This experiment proves that lightning and electricity are the same. To do the experiment you need four things, a kite, a key, some really bad weather, and a condenser, to store electricity. Most kites are made of paper, but a kite made of silk will not tear so soon in weather with rain and strong winds. Build the frame of the kite by making a small cross of two pieces of light wood. The pieces should be just long enough to reach the corners of the handkerchief. Tie the corners of the handkerchief to the points of the cross, and you will have a nice strong kite. Add a tail to the frame and tie a long string to the cross so you can control the kite. The next three steps are very important. First, fix a very sharp piece of metal, pointing a foot or more above the frame to the top of the longer stick of the cross. Second, fasten a key to the end of the long string. Third, tie a silk ribbon to the string, just above the key. This ribbon, which must not get wet, will protect you from the electricity. Fly the kite when a thunderstorm appears to be coming on. Stand inside a door, or under some cover, so that the silk ribbon does not get wet. Take care that the string does not touch the wall or the door. When a thundercloud comes over the kite, the sharp piece of metal will pull the electricity from the cloud. The kite and the string will become charged. When the kite and the string are wet from the rain, they will conduct the electricity very well. You can collect and store the electricity in the condenser and use it for other experiments.

图甲表示肝脏局部结构的内环境模式图，其中①②③④分别代表人体体液中的不同成分，图乙表示人体体液中这几种成分之间进行物质交换的关系。下列叙述正确的是（ ）。

2016年“十一”期间，刚领到4000元工资的小王在商场看中一件标价800元的服装，在和卖家讨价还价后最终以500元成交，这里涉及的货币职能依次是______。

1

14C测年法是利用14C衰变规律对古生物进行年代测定的方法。若以横坐标t表示时间，纵坐标m表示任意时刻14C的质量，m0为t=0时14C的质量。下面四幅图中能正确反映14C衰变规律的是______A．B．C．D．

针对当前我国城乡发展不平衡，农村发展不充分的问题，党的十九大提出了“产业兴旺、生态宜居、乡风文明、治理有效、生活富裕”的乡村振兴战略。实施乡村振兴战略______。

我国许多聚落名称体现了所处自然环境的特点。黄土高原地区有些聚落名为“XX川”。《现代汉语词典》解释：川地是山间或河流两边的平坦低洼的土地。据此完成下列问题。

“有机整合道德、心理健康、法律和国情等多方面的学习内容；与初中学生的家庭生活、学校生活和社会生活紧密联系。”这体现了初中思想品德课程的______。

的转化对解决环境、能源问题意义重大，利用电池，能有效地将转化成化工原料草酸铝，总反应为：，下列说法正确的是（ ）。

细胞是生命活动的基本结构和功能单位，下列有关说法错误的是______。

若，则

有一则笑话说明了网络的力量：一个人威胁另一个人说：“我可是有背景的人”。而被威胁的人笑着说：“别闹了，我可是有微博的人”。实践表明网络这一新兴媒体是______。 ①公民参与政治生活的重要平台 ②公民实现言论自由的唯一途径 ③党和政府了解民意民情的新渠道 ④实现人民当家做主的根本途径

1

子在川上曰：“逝者如斯夫，不舍昼夜”。这句话蕴含的道理是______。

某版教材在《斑羚飞渡》一课的课文中放置了一幅插图，从语文教材的构成要素来看，这个插图属于语文教科书的哪一个系统______

阅读《紫藤萝瀑布》的教学实录(片段)，按要求答题。 师：这篇文章读起来很美，其中的一个原因是它运用了多种修辞手法。请大家找一找运用了修辞手法的句子，并说出这些句子分别运用了哪种修辞手法。 生1：“从未见过开得这样盛的藤萝，只见一片辉煌的淡紫色，像一条瀑布，从空中垂下，不见其发端，也不见其终极。”这句话运用了比喻的修辞手法。 生2：“只是深深浅浅的紫，仿佛在流动，在欢笑，在不停地生长。”这句话运用了拟人的修辞手法。 师：大家找的句子都很准确，对句中所用的修辞手法的判断也都没有问题。老师这里也有一个句子，我觉得很美。大家看看这个句子运用了什么修辞手法呢? (PPT展示：这里除了光彩，还有淡淡的芳香，香气似乎也是浅紫色的，梦幻一般轻轻地笼罩着我。提示：“香气是紫色的”) 生：通感。 师：对!通感这一修辞手法在句中很难被察觉，但通感带来的表达效果却不输比喻、拟人。同学们在今后的写作中也可以多多运用通感的修辞手法，它会让你的作文更优美哦! 对上述教学实录(片段)的相关分析，正确的是( )。

不同于其他的行为准则，能够区分善恶、好坏、正义与非正义的行为准则是______。