At last he decided to _________ smoking.
The customs officer went through their bags looking _______ drugs.
Most of the population of the mainland USA livesЙ
They touched upon a wide _______ of subjects in their conversation.
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Family
1. The family, a basic social group united through bonds of kinship or marriage, has been present in all societies. Ideally, the family provides its members with protection, companionship, security, and socialization. The structure of the family and the needs that the family fulfils vary from society to society. The nuclear family – two adults and their children – is the main unit in some societies. In others, it is a subordinate part of an extended family, which also consists of grandparents and other relatives. A third family unit is the single-parent family, in which children live with an unmarried, divorced, or widowed mother or farther.
2. Historical studies have shown that family structure has been less changed by urbanization and industrialization than was once supposed. The nuclear family was the most prevalent pre-industrial unit and is still the basic unit of social organization. The modern family differs from earlier traditional forms, however, in its functions, composition, and life cycle and in the roles of husbands and wives.
3. The only function of the family that continues to survive all change is the provision of affection and emotional support by and to all its members, particularly infants and young children. Specialized institutions now perform many of the other functions that were once performed by the agrarian family: economic production, education, religion, and recreation. Jobs are usually separate from the family group; family members often work in different occupations and in locations away from the home. Education is provided by the state or by private groups. The family is still responsible for the socialization of children.
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A microwave oven
1. A microwave oven works by passing non-ionizing microwave radiation, usually at a frequency of 2.45 gigahertz (a wavelength of 12.24 centimetres), through the food. Microwave radiation is between common radio and infrared frequencies. Water, fat, and other substances in the food absorb energy from the microwaves in a process called dielectric heating.
2. Many molecules (such as those of water) are electric dipoles, meaning that they have a positive charge at one end and a negative charge at the other, and therefore rotate as they try to align themselves with the alternating electromagnetic field of the microwaves. This molecular movement represents heat which is then dispersed as the rotating molecules hit other molecules and put them into motion.
3. Microwave heating is more efficient on liquid water than on fats and sugars (which have a smaller molecular dipole moment), and also more efficient than on frozen water (where the molecules are not free to rotate). Microwave heating is sometimes explained as a resonance of water molecules, but this is incorrect: such resonance only occurs in water vapor at much higher frequencies, at about 20 GHz.
4. A common misconception is that microwave ovens cook food from the "inside out". In reality, microwaves are absorbed in the outer layers of food in a manner somewhat similar to heat from other methods. The misconception arises because microwaves penetrate dry non-conductive substances at the surfaces of many common foods, and thus often induce initial heat more deeply than other methods. Depending on water content, the depth of initial heat deposition may be several centimetres or more with microwave ovens, in contrast to infrared or convection heating, which deposit heat thinly at the food surface. Penetration depth of microwaves is dependent on food composition and the frequency, with lower microwave frequencies (longer wavelengths) penetrating better.
(Encyclopedia Wikipedia)
The company made a public _______ that the prices would decrease.
The state named after Queen Elizabeth I is…
The company made a public _______ that the prices would decrease.
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