In a way, all of us are on a spaceship, the planet Earth. We move around the sun (36) 18 miles per second and never stop. On our spaceship we have five billion people and a limited supply of air, water, and land. The (37) have to be used carefully because we can’t buy new air, water, or land from (38) else.
The environment on our planet is a closed system: nothing new is ever added. Nature (39) its resources. Water, for example, evaporates and (40) as visible drops to form clouds. This same water returns to the Earth as rain or snow. The rain that falls today is actually the same water fell on the (41) 70 million years ago.
Today, the Earth is in trouble. Factories (42) dirty water into our rivers. Many fish die and the water becomes unhealthy for people to drink. Cars and factories put poisons (43) the air and cause plants, animals and people to get sick. People throw bottles and paper out of their car
A. to
B. in
C. into
D. on
| "I do." To Americans those two words
can-y great meaning. They can even change your life. Especially if you say them
at your own wedding. Making wedding vows is like signing a contract. Now
Americans don’t really think marriage is a business deal. But marriage is
serious business. It all begins with engagement. Traditionally, a young man asks the father of his sweetheart for permission to marry her. If the father agrees, the man later proposes to her. Often he tries to surprise her by "popping the question" in a romantic way. Sometimes the couple just decides together that the time is right to get married. The man usually gives his fiancée a diamond r A. Traveling journal. B. Editorial section of a journal. C. Language journal. D. An introduction to American cultures. [单项选择]患儿，男，体重12kg，身高为85cm，生长发育良好。该患儿最可能的年龄为（）。
A. 9个月 B. 12个月 C. 24个月 D. 30个月 E. 36个月 [判断题]国务院部门制定的规范性文件，由本部门审核机构进行审核。
A.正确 B.错误 [单项选择]桥涵墩台的抗倾覆稳定系数K＝y/e0，y为基底截面重心轴至截面最大受压边缘的距离，e0为偏心距。对于宽度为b的矩形基础底面，当作用于基础上的力系使基础底面最小压力pmin=0时，抗倾覆稳定系数应等于( )。
A. 1.0 B. 2.0 C. 3.0 D. 3.5 [单选题]在列车中连续连挂不得超过（ ）辆。
A.1 B.2 C.3 D.4 [单选题]1.178. 第178题
配网抢修指挥主要包括工单接收、故障研判、派单指挥、现场抢修、回单审核、工单回复环节。（ ） A.正确 B.错误 [单选题]【单选题】 普通型流脑败血症期的重要体征是()
A. 口唇发绀 B. 皮肤、黏膜瘀斑 C. 单纯疱疹 D. 脾大 E. 皮肤花斑状 [判断题]个人大额存单的认购起点金额以产品约定为准， 但不得低于 20 万元（ 含） 。
A.正确 B.错误 [单选题]用外径千分尺测量轴颈的圆度偏差时,在某一断面两个互相垂直的平面上测得的数值分别是Φ20.08mm和Φ20.12mm,则其断面处的圆度偏差为( )㎜.
A.0.04 B.0.02 C.0.20 D.0.10 [单项选择]1792年8月10日巴黎人民武装起义最重要的成果是：（）
A. 推翻了国王路易十六 B. 取得了瓦尔密战役的胜利 C. 召开了普选的国民公会 D. 建立了法兰西第一共和国 [多项选择]县级以上人民政府建设行政主管部门和其他有关部门应当及时受理对建设工程生产安全事故及安全事故隐患的（）。
A. 申诉 B. 起诉 C. 检举 D. 控告 E. 投诉 [单选题]250（不含）～350km/h线路轨道静态几何尺寸容许偏差管理值内轨向临时补修标准为（ ）mm。
A.2 B.4 C.5 D.6 [单选题]碾压混凝土铺筑作业时，两台平仓机并排平仓时，两平仓机刀片之间应保持( )cm间距。
A.10-20 B.15-25 C.25-35 D.20-30 [判断题]无缝线路轨温大于15℃时，可重点安排矫直钢轨硬弯、钢轨打磨、焊补等作业。
A.正确 B.错误 我来回答: 提交
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