The historian Frederick J. Turner wrote in the 1890’s that the agrarian discontent that had been developing steadily in the United States since about 1870 had been precipitated by the closing of the internal frontier that is, the depletion of available new land needed for further expansion of the American farming system. Actually, however, new lands were taken up for farming in the United States throughout and beyond the nineteenth century. (46) In the 1890’s, when agrarian discontent had become most acute, 1,100,000 new farms were settled, which was 500,000 more than had been settled during the previous decade. After 1890, under the terms of the Homestead Act and its successors, more new land was taken up for farming than had been taken up for this purpose in the United States up until that time. (47) It is true that agricultural practices had become sufficiently advanced to make it possible to increase the profitability of farming by utilizing even these r
| There are several ways you can find out
about the countries and places you wish to visit. You can talk to friends who
(41) to the places, or you can go and see a (42)
film about them, (43) you can read travel
books. (44) would seem that there are three kinds of travel books. The first are those that give a personal, (45) account of travel which the author has actually (46) himself. If they are informative and have a good index, (47) they can be useful to you when you (48) your travel. The second kind are those books (49) purpose is to give a purely objective (50) of things to be done and seen. If a (51) , cultured person has written such a book, then it is even more useful. It can (52) as a selective guide book. The third kind are those books which are called A. in spite of B. in addition to C. on account of D. in the event of [单项选择]依据《标准施工招标文件》，承包人对总监理工程师授权的监理人员发出的指示有疑问时，可向总监理工程师提出书面异议，总监理工程师应在( )小时内对该指示，予以确认、更改或撤销。
A. 12 B. 24 C. 36 D. 48 [多选题]工作票签发人或工作负责人，应根据现场的( )等具体情况，增设专责监护人和确定被监护的人员。
A.A.安全条件 B.B.施工范围 C.C.工作需要 D.D.以上都对 [单项选择]钻进时，为避免卡钻，要及时（）
A. 敲钻杆 B. 滑井 C. 加压 D. 加速 [填空题]当事人为了重复使用而预先拟定,并在订立合同时未与对方协商的条款称为( )。
[单选题]无法送达火灾事故认定书的可以在作出火灾事故认定之日起( )日内公告送达。
A. 2 B. 5 C. 7 D. 15 [多选题]清除率是反映肾脏生理功能的一项重要指标，关于肾脏清除率的测定，下列说法正确的有（）。
A.测定菊粉清除率可以推算肾小球滤过率、肾血浆流量和肾血流量 B.测定对氨基马尿酸的清除率可以推算肾血浆流量和肾血流量 C.自由水清除率可以反映肾产生无溶质水的情况 D.根据不同物质与菊糖的清除率比值可推测肾小管和集合管对不同物质的处理情况 [单选题]心源性休克患者表现为
A. 面颊紫红,口唇轻度发绀 B. 面色晦暗,口唇青紫 C. 面色苍白,出冷汗,四肢厥冷 D. 意识丧失,严重发绀,心跳、呼吸骤停 E. 双颊绀红,口唇呈樱桃红色 [单项选择]现在国际上公认采用标准氢电极作为参比电极，规定标准氢电极的电位为（）。
A. 正值 B. 负值 C. 零 D. 非固定值 [多选题]下列关于施工现场消防车道设置陈述正确的有( )。
A.临时消防车道的左侧应设置消防车行进路线指示标识 B.施工现场周边道路满足消防车通行及灭火救援要求时,施工现场内可不设置临时消防车道 C.临时消防车道的净宽度和净高度均不应小于 4m D.施工现场临时消防车道与在建工程、临时用房、可燃材料堆场及其加工场的距离不宜小于 5m,且不宜大于 40m E.施工现场确有困难只能设置 1 个出入口时,应在施工现场内设置满足消防车通行的环形道路 [填空题]洁肤用药皂
[单项选择]不属于层次管理优点的有（）
A. 能充分利用空间 B. 是稳定结构 C. 各个层次只需最少的信息传输量 D. 节约管理费用 E. 消除组织规模和复杂性的联系 [多选题]指挥中心接到参战力量到达现场的报告时，应首先了解外部侦查情况。其主要内容包括（）情况等。
A.人员被困及伤亡情况 B.外部观察的火焰及烟雾情况 C.灾情蔓延 D.灾害类型 E.战斗展开 [单项选择]不采取公示制度，向少数特定的投资者发行的证券是( )。
A. 上市证券 B. 非上市证券 C. 公募证券 D. 私募证券 [判断题]感觉器官包括眼、耳、鼻、舌、皮肤。
A.正确 B.错误 [判断题]煤污病主要是由于周围环境污染引起的。( )
A.正确 B.错误 [单选题]杀灭细菌繁殖体用煮沸消毒法时，水沸后持续的时间是
A.5～10min B.4～5min C.3～5min D.2～5min E.1～5min [判断题]在财务管理上，现金收支应统一由按摩师管理。
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