请完成“单元任务书3_网络设备选型与绘制拓扑结构图”任务练习

下面哪些是合法的标示符 A: 2variable B: variable2 C: what$ D: _3_

五指活动犹如人的手指，五个手指分别代表1_、2_、3_、4_、5_活动。

L7 departure translation 7法航401，由于高度限制，1500米保持。AFR401, _1_ 1500m _2_to _3_ _4_.

The last component of the balance sheet is _1__. It is what remains when you __2_all of the liabilities from all of the assets and it indicates the __3_ of a company.

根据酸碱质子理论判断，下列物质既可作酸又可作碱的是（ ） A: [Al(H2O)6]3＿ B: H2CO3 C: H2PO4－ D: Ac－

1.2018年3月22日，船时SMT(ZT)0506，推算船位纬度34°15′.0N，经度151°30′.0E，停秒表天文钟时间CT：07h05m18s，天文钟钟差CE=10s（快）,秒表读数WT28s，则测天世界时为___2018__年__3_月___(1)__日___（2）__时__(3)___分__（4）__秒

请听Hokey Pokey， 将横线上补全单词。 You put one hand___1_ . You put one hand __2___.you put one hand in and shake shake shake shake shake. You __3_ the Hokey Pokey and __4__ __5_ .

改写句子Tourists can see many interesting things in Shanghai.There __1_ many interesting things for tourists to see in Shanghai.Linda plans to take a train to Shanghai next week.Linda plans to go to Shanghai _2__ next week.She will spend a week in Shanghai.She will __3_ in Shanghai for a week.

7.3请将上题7.2程序运行的结果按从小到大的顺序输入一下空白：＿＿1＿,＿＿2＿,＿＿3＿,＿＿4＿,＿＿5＿,＿＿6＿,＿＿7＿,＿＿8＿,＿＿9＿,＿＿10＿,＿＿11＿,＿＿12＿,＿＿13＿,＿＿14＿,＿＿15＿,＿＿16＿,＿＿17＿,＿＿18＿,＿＿19＿,＿＿20＿,＿＿21＿,＿＿22＿,＿＿23＿,＿＿24＿,＿＿25＿