若津液已伤，渴甚，苔干，应A．改用增液汤 B．改用润肠丸 C．加用增液汤 D．加用润

患者孕7个月，腹部增大异常，胸膈满闷，呼吸短促，神疲体倦，四肢不温，小便短少，甚则喘不得卧，舌淡胖，苔白，脉沉滑无力。治疗应首选的方剂是（）

A.五苓散

B.参苓白术散

C.鲫鱼汤

D.人参健脾丸

E.白术散

为战时储备粮食、医药、油料和其他必需物资的工程，应当建在( )地方。

A．山体中

B．远离城市中心区

C．地下或者其他隐蔽地点

D．靠近交通干线

The city water pipes in Rome were usually of baked clay or lead; copper was sometimes used and also hollowed stone. For the large supply conduits leading to the city the Romans used covered channels with free water surfaces, rather than pipes. Perhaps this choice was a matter of economics, for apparently they could make lead pipes up to 15 inches in diameter. While pipes can follow the profile of undulating ground, with the pressure increasing in the lower areas, channels cannot. They must slope continuously downwards, because water in channels does not normally flow uphill; and the grade must be flat, from 1 in 60 in small channels to perhaps 1 in 3,000 in large ones, to keep the water speed down to a few feet per second. Thus the main supply channels or aqueducts had long lengths of flat grade and where they crossed depressions or valleys they were carried on elevated stone bridges in the form of tiered arches. At the beginning of the Christian era there were over 30 miles of these raised aqueducts in the 250 miles of channels and tunnels bringing water to Rome. The channels were up to 6 feet wide and 5 to 8 feet high. Sometimes channels were later added on the tops of existing ones. The remains of some of these aqueducts still grace the skyline on the outskirts of Rome and elsewhere in Europe similar ruins are found.

Brick and stone drains were constructed in various parts of Rome. The oldest existing one is the Cloaca Maxima which follows the course of an old stream. It dates back at least to the third century B.C. Later the drains were used for sewage, flushed by water from the public baths and fountains, as well as street storm run-off.

The truly surprising aspect of the achievements of all the ancient hydraulic artisans is the lack of theoretical knowledge behind their designs. Apart from the hydrostatics of Archimedes, there was no sound understanding of the most elementary principles of fluid behaviour. Sextus Frontinus, Rome’s water commissioner around A.D. 100, did not fully realize that in order to calculate the volume rate of flow in a channel it is necessary to allow for the speed of the flow as well as the area of cross-section. The Romans’ flow standard was the rate at which water would flow through a bronze pipe roughly 4/3 inch in diameter and 9 inches long. When this pipe was connected to the side of a water-supply pipe or channel as a delivery outlet, it was assumed that the outflow was at the standard rate. In fact, the amount of water delivered depended not only on the cross-sectional area of the outlet pipe but also on the speed of water flowing through it and this speed depended on the pressure in the supply pipe.

The main subject of the passage is concerned essentially with（）

A．the classical scientific achievements

B．the theoretical Greek hydrostatics

C．the ancient Roman hydraulic system

D．the early European architectural designing

阅读下列图文材料，回答问题。

材料一：喀什是我国最西端的一座城市，有着悠久的历史、灿烂的文化，“五口通八国，一路连欧亚”，与周边经济互补性强，是祖国向西开放的重要门户。2010年5月中央正式批准设立喀什市为我国第六个经济特区。

材料二：1990年和2006年新疆农业结构表格。

材料三：“红色产业”是喀什农业生产的一大特色，红花、番茄、枸杞是该地区“红色产业”的三大支柱，其中番茄酱是重要出口创汇产品。

1．喀什地区位于____________ 盆地西部，邻近____________山脉。该地区河流的主要补给类型是____________，河流径流量的特征是_________________________________________。

2．分析1990年以来新疆农业结构调整的特点。_________________________________________________________________。

3．评价目前新疆种植业、林业和牧业的比重是否合理，并说明理由。

_________________________________________________________________。

4．分析喀什地区发展“红色产业”的优势自然条件。

_________________________________________________________________。

5．2010年5月，中央正式批准喀什设立经济特区。根据图文资料，分析喀什成为经济特区的优势条件。

_________________________________________________________________。

(12分)如图15所示，小球甲从倾角θ＝30°的光滑斜面上高h＝5 cm的A点由静止释放，同时小球乙自C点以速度v₀沿光滑水平面向左匀速运动，C点与斜面底端B处的距离L＝0.4 m．甲滑下后能沿斜面底部的光滑小圆弧平稳地朝乙追去，甲释放后经过t＝1 s刚好追上乙，求乙的速度v₀.