治疗癫痫持续状态的首选药物是（） A.水合氯醛 B.苯巴比妥钠 C.地西泮 D.甘露

Questions 61-70 are based on the following passage.

While some international couriers are showing signs of exhaustion, EMS (Express Mail Service), the generic name for the courier services of post offices, seems to be finding its stride. Known as Datapost in Britain, as Chronopost in France, and as A1-Barid al-Mumtaz in Saudi Arabia, EMS is now second in the international courier business (jointly with TNT Skypack). Last year it delivered 5.6 million items, weighing less than 20 kilograms each, across borders. That and its annual growth rate of around 5 percent have worried DHL, the market leader, enough for it to counter-attack in the Courts.
On October 26, a Dutch judge ruled against DHL on all three counts filed against the Dutch post office: that the three-initial name was too close to DHL’s; that the orange lines in the EMS logo were too similar to DHL’s dark red ones; and that the claim to the widest route system in the world was unfounded. DHL has threatened the Swiss post office with similar action, but it may reconsider after the Dutch ruling.
EMS has some advantages over the private couriers. One is a dense ready-made network of offices, especially in Europe, the avowed target area of the private couriers. Another advantage is a long tradition of working with customs authorities. In a business where minutes count, it pays to have good friends at customs. That advantage particularly irritates the private couriers because there is no legal way to combat such unquantifiable coziness.
The private courier services are also annoyed because in countries like Switzerland and Italy, where the post office is officially a monopoly, they pay it a fee. In Switzerland DHL says it pays more than SFr lm ($ 708,000) "to the competition" each year. In France the couriers have won a battle for exoneration.
Although governments are under little pressure to keep prices artificially low, EMS is often cheaper than the private couriers, but not always. A recent test in Britain (on a domestic route) showed Datapost about halfway between the least and the most expensive, but gave it full marks for speed and service.
Each national EMS is free to set its rates and follow its own rules on things like bulk discounts. The Universal Postal Union, based in Berne, determines how costs and revenues are split between sending and receiving countries, and standardizes procedures. More than 100 postal administrations have linked into the system—and more are coming, including Russia’s. That makes the feisty EMS particularly happy since its rivals have not been allowed to serve anywhere in Russia.

The passage focuses primarily on ______.

A. problems of post offices in Britain
B. the new courier service—EMS
C. the competition between private and international courier services
D. differences between EMS and DHL

某汽车司机看到交通岗的绿灯亮后，立即以3m/s²的加速度开始起动汽车，去追赶前方x₀=330m远、同方向行驶的自行车．设汽车能达到的最大速度为v_m=30m/s，自行车以v₁=6m/s的速度做匀速直线运动．试求：

小题1:汽车在追上自行车前运动多长时间与自行车相距最远？此时他们之间的距离是多少？

小题2:汽车至少要用多长时间才能追上自行车?

我国面积最大的岛屿是（ ）

A．舟山群岛

B．海南岛

C．崇明岛

D．台湾岛

一般搜集租金资料的途径有（）。

A.通过交易双方当事人

B.通过搜集原始资料

C.可至欲调查区域内房地产经纪机构查询同类产品租金行情

D.参考专业杂志的租金行情资料

E.以欲承租者名义调查

轮胎气压过低会增大轮胎的（），油耗会显着增加。

A.滚动阻力

B.空气阻力

C.负荷

D.寿命