多数科学家认为人类进化的主要历程为 ①能人阶段②南方古猿阶段③智人阶段④直立人阶

在溶液导电性装置中放入甲溶液，然后逐渐滴加乙溶液，电路中灯泡出现“亮-暗-灭-暗-亮”变化的组是 [ ]

A．甲溶液：CuSO₄、乙溶液：Ba(OH)₂

B．甲溶液：H₂SO₄、乙溶液：Ba(OH)₂

C．甲溶液：HCl、乙溶液：AgNO₃

D．甲溶液：NH₃·H₂O、乙溶液：CH₃COOH

河北省A地人民法院于2005年3月17日立案受理了李永与王强的合同纠纷案件。人民法院受理案件后，认为本案案件事实清楚，权利义务关系明确，于2005年3月20日适用简易程序开庭审理此案。案件在审理过程中，由于王强提出新的证据，案情发生变化，2005年6月18日此案仍旧没有审结。6月20日，人民法院将此案转为普通程序审理，并通知了双方当事人。请问人民法院应当从何日起计算本案的审理期限( )

A．从2005年3月17日起开始计算

B．从2005年3月18日起开始计算

C．从2005年S月20日起开始计算

D．从2005年6月21日起开始计算

以下不属于保险公司资金运用领域的是()。

A．银行存款

B．买卖政府债券

C．用于设立证券经营机构

D．买卖金融债券

根据《SDH长途光缆传输系统工程设计规范》，电信基本建设中涉及国防安全的还应执行信息产业部颁发的《电信基本建设贯彻国防要求技术规定》。

One of the most convenient and cheapest ways to see America is by riding a Greyhound bus. This interstate bus system connects all major cities in the United States, (52) people with frequent and convenient service. The bus system even has an international service (53) makes connection with cities in Canada and Mexico.

Its network even extends to some of the smaller towns and out-of-the-way communities (54) the great interior of the country. Traveling by bus may (55) longer than flying by plane, but the terminals are located in the center of most cities and there is (56) to the downtown area. These buses are comfortable and air-conditioned. They are all equipped with toilets in the rear to (57) the convenience of the passengers, but there are some very severe (58) of conduct which are strictly enforced. On all buses (59) is forbidden and the consumption of alcoholic drinks is not allowed.

(60) bus travel may not be suited to everyone’s taste, it affords budget travelers the (61) to see America in comfort and safety and at a leisurely unhurried pace.

54().

A.for 

B.along 

C.in 

D.from