However, seafood is a highly perishable food item which is increasingly global traded so that a lot of particular conditions and difficulties more have to be taken into account compared to other food

A . fine B . cloudy C . rainy D . windy

A . The battery on the machine is bad. B . The root volume group is corrupted. C . The low-level debugger is not enabled. D . There is a problem with the CD-ROM.

A . lower KG B . smaller GM C . smaller roll angle D . larger GZ

A . warmer，less dense，and less stable B . cool，more dense，and drier C . muggy and cloudy D . extremely moist with high relative humidity

A . increased capacity of the compressor B . more efficient operation of the thermal expansion valve C . decreased capacity of the compressor D . loss of receiver capacity

A . toxic B . flammable C . explosive D . all of the above

A . carry low density cargoes B . protect fragile cargoes C . stow cargoes with concentrated weights such as machinery D . carry cargoes of very low stowage factor

A . KM is small B . KM is high C . BL is smal D . l D.KB is large

A . superheated outside the system B . in contact with an open flame C . heated to the boiling point D . All of the above

A . increase scavenge air pressure B . reduce fuel booster pump pressure C . adjust the fuel rack D . retard fuel injector timing

A . emergency B . stuff C . priority D . rage

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A．fourth B．fifth C．sixth D．seventh

A. come up with B. keep up with C. keep away from D. put up with

Population control has long been a subject of discussion among researchers. Some have argued that the supply of good land is limited. In order to feed a large population, bad land must be cultivated and the good land overworked. As a result, each person produces less in a given amount of time and this means a lower average income than could be obtained with a smaller population. Other researchers have argued that a large population gives more scope for the development of facilities such as sports, roads and railways, which are not likely to be built unless there is a big demand to justify them. Similarly, it can be argued that the public costs of society will not be so heavy to each individual if they are shared among the members of a large population. One of the difficulties in implementing birth control lies in the fact that the official attitudes to population growth vary from country to country. In underdeveloped countries where a large population is pressing hard upon the limits of food, space and natural resources, it will be the first concern of government to place a limit on the birthrate. In a well-developed society the problem may be more complex. A declining birthrate may lead to unemployment because it results in a shrinking market. Cities with a declining population may have to face the prospect of a shrinking tax base and a fall in land values. If there are fewer children going to school, teachers may be thrown out of work. When the pressure of population on housing declines, prices also decline and the building industry is weakened. Faced with considerations such as these, the government of a developed country may well prefer to see a slowly increasing population, rather than one which is stable or in decline. The writer suggests that policy makers should consider cultural values ______. A．in carrying out family planning B．in producing birth control drugs C．in improving public health standards D．in introducing birth control techniques