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A.  Lend a hand. B.  Keep your eyes open. C.  Be seen, but not be heard. D.  Make friends with your neighbors. E.  Volunteer in your community. F.  Keep your home safe and attractive. Tips for Being a Good Neighbor 小题1:_______________ No one likes a noisy neighbor. Do you hold parties that last all night? Do you leave your dog outside to bark all day? Remember that not everyone has the same schedule as you do, so use some common sense. Keep noise to the lowest level. If you’re holding a party that’s likely to be loud, invite everyone within earshot. 小题2:_______________ It’s much easier to solve any problem with neighbors if you have a friendly relationship with those around you. Furthermore, you may realize that you have things in common and make a lifelong friend. 小题3:_______________ Once you know your neighbors, then you’ll also know if something seems out of place in the neighborhood. Are strange people carrying expensive things out of one neighbor’s house? Have several days passed since your elderly neighbor last collected his newspaper? The benefit of keeping an eye out for unusual behavior in the neighborhood is that others will do the same for you. 小题4:_______________ It never hurts to follow the Golden Rule: Do to others what you would like them to do to you. Treat your neighbors with respect. Offer to drive an elderly neighbor to the grocery store. Volunteer to collect mail while a neighbor is on vacation. The more often you lend a helping hand, the more likely that your neighbors will do the same for you when you need a little help. 小题5:_______________ Don’t just limit your neighborly actions to your block or street. Remember that everyone who lives in a community has the ability to help make it a better place. Think about your passion and find a way to do it on a volunteer basis in your town. Volunteer at the local library. Enjoy working with kids. Consider becoming a scout leader. Whatever your passion is, there’s sure to be a thing suitable for you to help in the local community.
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【单选题】腱反射具有下列哪项特点:
A.
是多突触反射
B.
肌肉的收缩几乎是一次同步性的收缩
C.
感受器为腱器官
D.
可由重力作用引起
E.
主要表现在屈肌上
【简答题】氨和联氨 是氮的两种常见化合物。在科学技术和生产中有重要的应用。 根据题意完成下列计算: (1)联氨用亚硝酸氧化生成氮的另一种氢化物,该氢化物的相对分子质量为43.0,其中氮原子的质量分数为0.977,计算确定该氢化物的分子式。该氢化物受撞击则完全分解为氮气和氢气。4.30 g该氢化物受撞击后产生的气体在标准状况下的体积为________ L。 (2)联氨和四氧化二氮可用作火箭推进剂,联氨是燃料,...
【简答题】已知甲和乙在溶液中的转化关系如图所示: 。请回答下列问题: (1)若甲是10电子的阳离子,乙是碱性气体。1 mol乙通入足量强酸溶液中与H + 反应,反应过程中的能量变化如图。写出乙的一种用途________________。该反应的热化学方程式为___________________________。 (2)若甲是CO 2 ,用CO 2 和NH 3 反应可以合成尿素,合成尿素的反应分为如下两步。...
【判断题】肌腱具有可收缩性。
A.
正确
B.
错误
【单选题】男患、45岁,诉说3个月前过度弯腰时出现背部有塌下的感觉,以后胸椎中下段棘突区疼痛、围绕躯干向任一侧放射,并于咳嗽或喷嚏时疼痛加重;4天前出现便秘,下腹部与双下肢麻木;入院当日两下肢无力,几乎不能行路,同时有排尿困难。既往史无特殊。查体:双上肢肌力正常、两下肢除股四头肌有微弱收缩外不能移动,双侧肱二、三腱反射(++),双侧膝反射(++++),双侧腹壁反射(-),脐水平可触及膀胱上缘,肛门括约肌松弛...
A.
急性脊髓炎
B.
脊髓硬脊膜外脓肿
C.
胸椎间盘突出所致脊髓压迫症
D.
脊柱外伤
E.
转移癌所致脊髓压迫症
【简答题】某化学课外兴趣小组的同学欲探究三聚氰胺(化学式为C 3 H 6 N 6 )的制取原理: 【查阅资料】 (1)目前,化工企业常用尿素合成法制取三聚氰胺。即以尿素[化学式:CO(NH 2 ) 2 ]为反应物,硅胶为催化剂,在380℃至400℃的温度下,沸腾反应、冷凝得到三聚氰胺,同时产生两种无色气体,其中一种气体具有刺激性气味。 (2) NO是无色气体,不溶于水,在空气中能迅速氧化为红棕色NO 2 气...
【单选题】一名 65 岁女性,长期慢跑,有腱鞘炎病史,左膝盖撞击伤,下图是其左侧缝匠肌腱鞘活检切片图,可见成束的胶原,具有传递肌收缩力到骨的功能,此种特征的结缔组织属于下列哪种类型。
A.
不规则 致密结缔组织
B.
规则 致密结缔组织
C.
弹性组织
D.
疏松结缔组织
E.
网状组织
【简答题】通过观察上肢骨与肌肉的情况,请回答下列问题: (1)一块骨胳肌包括①肌腱和②______两部分,它具有______的特性. (2)图中③是肱二头肌,④是肱三头肌. (3)图A是______动作.这时,肌肉④处于收缩状态,肌肉③处于舒张状态. (4)图B是______动作.这时,肌肉③处于收缩状态,肌肉④处于舒张状态. (5)由此可见,人体的任何一个动作,都不是由一组肌肉独立完成的,而是由两组肌肉在...
【多选题】甲、乙于同一天分别就 “太阳”商标申请注册于服装之上,下列说法正确的是( ACD )
A.
商标局应当初步审定公告使用在先的商标。
B.
商标局应当初步审定公告甲与乙共有 “太阳”商标。
C.
如果甲和乙都未使用,商标局应当通知甲和乙自行协商解决。
D.
如果甲和乙协商不成,商标局应当通知甲和乙以抽签方式确定一个申请人。
【简答题】2008年我国发生了大面积的粉事件.据质监部门调查,这种粉过量添加了一种被称为三聚氰胺的化学物质,其化学式为C 3 H 6 N 6 .三聚氰胺为白色晶体,无味,溶于热水,微溶于冷水,低毒,价格便宜.奶粉中一般蛋白质含量为15~20%,蛋白质中含氮量平均为17%.因此,三聚氰胺也常被称为“蛋白精”. (1)三聚氰胺中氮元素的质量分数是______.(精确到0.1) (2)牛奶和奶粉添加三聚氰...
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