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Instant foods, instant communication, faster transportation—all of these recent developments are designed to save time. Ironically, though, instead of making more leisure time available, these developments have contributed to a pace of human affairs that is more rushed than ever before. In this section, you are asked to write an essay on a major disadvantage of "instant" technology. You can provide specific reasons and examples to support your idea. You should write at least 150 words.

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ARPAnet is a wide area network(WAN)．A network that connected Department of Defense research sites across(1)．Created in 1 969 with funding from the Advanced Research Projects Agency(ARPA)．Undergoing constant research and development in the early—to mid一1970s，ARPAnet(2)aS the test bed for the development of(3)(the protocols that make the Internet possible)．A major goal of the ARPAnet project was to increase the military’s command and control capability by enabling communication across a variety of physically (4)media，including satellites．An allied goal was to create a robust network：(5)withstanding outages，such as those that might result from a nuclear exchange．ARPAnet met these objectives，but it also (6) its creators：It was found in short order that most ARPAnet users (7) use the network for(8)，such as electronic mail and discussion groups．Initially，the ARPAnet was available only to government research institutes and to universities holding Department of Defense(DoD)research contracts．In 1 983，ARPAnet was(9)into a high—security military network(Milnet)and an ARPAnet that was recast as a research and development network．Although it formed the (10) of the Internet，it was decommissioned in 1 990． (1)

A. England
B. America
C. Europe
D. China

设A是五阶矩阵，A是A的伴随矩阵，若η1，η2是齐次线性方程组Ax=0的两个分量不成比例的解，那么秩r(A)=______．

There is a lot of imported merchandise available in our market. Some people advocate that we should only buy things that are made in our own country. Do you agree In this section, you are asked to write an essay on whether we should only buy things made in our own country. You can provide specific reasons and examples to support your idea. You should write at least 150 words.

背景某水闸为14孔开敞式水闸，设计流量为2400m3/s。每个闸墩划分为一个单元工程，其中第4号闸墩高10.5m，厚1.5m，顺水流方向长24.0m，其混凝土量为365.8m3，模板面积为509.6m2，钢筋量为30.5t。闸墩混凝土采用钢模施工。承包人进行闸墩模板及支架设计时，考虑的基本荷载有模板及支架自重、新浇混凝土重量、钢筋重量以及振捣混凝土时产生的荷载。监理单位发现承包人考虑的基本荷载有漏项并及时进行了纠正。施工过程中，承包人和监理单位对第4号闸墩的混凝土模板进行了检查验收，填写的《水利水电工程混凝土模板工序质量评定表》见下表。水利水电工程混凝土模板工序质量评定表单位工程名称 ××水闸工序编号 ××× 分部工程名称闸室段施工单位 ××× 单元工程名称、部位第4号闸墩施工日期 ×年×月×日～×年 ×月×日项次检验项目质量标准检查(测)记录合格数合格率(%) 主控项目 1 稳定性、刚度和强度满足混凝土施工荷载要求，并符合模板设计要求采用钢模板、钢支撑和木方，稳定性、刚度和强度满足混凝土施工荷载要求，并符合模板设计要求 2 承重模板底面高程允许偏差0～+5mm / 3 结构物边线与设计边线内模板：允许偏差 -10mm～0；外模板：允许偏差0～+10mm； 1.494，1.500，1.503，1.502， 1.498，1.503，24.000，24.003， 23.997，23.998，24.000，24.002 4 预留孔、洞尺寸及位置孔、洞尺寸允许偏差 -10mm / 孔洞位置允许偏差 ±10mm / 一般项目 1 模板平整度、相邻两板面错台钢模允许偏差2mm 0.9，1.5，2.8，0.7，2.4，0.7， 0.3，1.2，1.1，0.8 2 局部平整度钢模允许偏差3mm 3.4，0.2，0.4，1.0，2.2，1.7， 0.7，3.3 3 板面缝隙钢模允许偏差1mm 1.1，0.9，0.5，0.2，1.2，0.4， 0.7，0.5，0.3，0.7 4 结构物水平断面内部尺寸允许偏差±20mm / 5 模板外观表面光洁、无污物表面光洁、无污物施工单位自评意见工序质量等级评定为： (签字，加盖公章) ×年×月×日监理单位复核意见工序质量等级评定为： (签字，加盖公章) ×年×月×日 [问题] 统计《水利水电工程混凝土模板工序质量评定表》中各“项次”检测点数、合格点数和合格率。