Like land, labor is means of production. In nonindustrial societies, access to both land and labor comes through social links such as kinship, marriage, and descent. Mutual aid in production is merely one aspect of ongoing social relationships that are expressed on many other occasions.Nonindustrial societies contrast with industrial nations in regard to another means of production—technology. In bands and tribes manufacturing is often linked to age and gender. Women may weave and men make pottery or vice versa. Most people of a particular age and gender share the technical knowledge associated with that age and gender. If married women customarily make baskets, most married women know how to make baskets. Neither technology nor technical knowledge is as specialized as it is in states.However, some tribal societies do promote specialization. Among the Yanomani of Benezuela and Brazil, for instance, certain villages manufacture clay pots and others make hammocks. They don’t specialize, as one might suppose, because certain raw materials happen to be available near particular village. Clay suitable for pots is widely available. Everyone knows how to make pots, but not everybody does so. Craft specialization reflects the social and political environment rather than the natural environment. Such specialization promotes trade, which is the first step in creating an alliance with enemy villages. Specialization contributes to keeping the peace, although it has not prevented inter-village warfare.Among the Trobriand Islanders of the South Pacific, Malinowski found that only two out of several villages manufactured certain ceremonial items that were important in a regional exchange network called the kula ring. As among the Yanomani, this specialization was unrelated to the location of raw materials. We don’t know why this specialization began, but we do know that it persisted within the kula ring, which allied several communities and island in a common trade network. In nonindustrial societies, how do people obtain the means of production().
A. By land and labor.
B. Through social links.
C. By mutual aid.
D. By many other occasions.
Every year, 2,000 American lives are saved by the selflessness of others. These are the bone marrow donors who give the gift of life to patients fighting deadly diseases such as leukemia, lymphoma, and aplastic anemia. That’s the good news. The bad news is that thousands more die each year because not enough people have signed on to the registries that would help the ill find a suitable match for a transplant.Bone marrow or stem-cell transplants are usually a last resort, intended for those whose illnesses have not responded to traditional treatments such as chemotherapy or radiation. How do they work We all store a special type of cell in our bone marrow called stem cells. These primitive cells give rise to the three types of blood cells: red, white and platelets. Everyone’s stem cells have certain genetic characteristics or markers that make them unique from others. Despite this uniqueness, there are some shared characteristics between people. This is important, because a patient’s immune system will reject blood or organs received from someone else if they do not share sufficient similarities.Family members, especially siblings, are always the first to be considered as donors, because there’s a greater chance that the genetic markers on their cells will have enough in common to prevent rejection after transplantation. In many cases, however, a familial match can’t be found and then the search begins for an unrelated donor. These donors typically come from a pool of people who have already signed up on a donor registry in the event that their cells match a needy recipient.Once the lab has verified a match between donor and recipient, the next phase starts. The patient is given radiation or chemotherapy to kill the unhealthy cells. Healthy cells are harvested from the donor—either extracted from the pelvic bones or taken from the arm in a way that is similar to having blood drawn—and prepared in a laboratory. Once they’re ready, they’re given to the patient through a vein—the same way as one would receive a blood transfusion. Once these transplanted donor cells get settled within the patient’s bone marrow, they make the healthy red blood cells, white blood cells and platelets necessary to support life.One of the major problems currently faced by transplant centers is that while bone marrow transplants can cure more than 70 different diseases, there aren’t enough donors on the registry to treat the more than 3,000 patients awaiting transplants. The National Marrow Donor Program, the largest registry in the country, has approximately 4.8 million adult volunteer donors, but that isn’t nearly enough for the thousands who need transplants.Why isn’t a pool of more than 4 million donors isn’t enough to cover 3,000 needy patients Here’s the reason: in the vast majority of cases, finding a suitable match isn’t easy. Because we are unique individuals with a variety of ancestral backgrounds and integration patterns, finding someone similar to us is a major task. In the end, it comes down to a numbers game—the more potential donors listed on the registry, the greater a chance of finding a match, especially for those with unusual genetic characteristics. The shared genetic characteristic of stem cells is important in bone marrow transplant because ().
A. the same primitive cells can produce the same type of blood cells
B. one’s immune system will reject the blood or organ of different genetic markers
C. one’s immune system will not function well when facing different stem cells
D. the uniqueness of genetic characteristics will destroy the patient’s immune system
In the United States the first day nursery was opened in 1854. Nurseries were established in various areas during the (31) half of the 19th century; most of (32) were charitable. Both in Europe and in the U.S., the day-nursery movement received great (33) during the First World War, when (34) of manpower caused the industrial employment of unprecedented numbers of women. In some European countries nurseries were established even in munitions plants, under direct government (35) . Although the number of nurseries in the U.S. also rose (36) , this rise was accomplished without government aid of any kind. During the years following the First World War, (37) , Federal, State, and local governments gradually began to (38) a measure of control in the day nurseries, chiefly by (39) them and by inspecting and regulating the conditions within the nurseries.The (40) of the Second World War was quickly followed by an increase in the number of day nurseries in almost all countries, as women were again (41) to replace men in the factories. On this (42) the U.S. government immediately came to the support of the nursery schools, (43) $6,000,000 in July, 1942, for a nursery-school program for the children of working mothers. Many states and local communities (44) this Federal aid. By the end of the War, in August, 1945, more than 100, 000 children were being cared (45) in daycare centers receiving Federal (46) . Soon afterward, the Federal government drastically (47) its expenditures for this purpose and later (48) them, causing a sharp drop in the number of nursery schools in operation. However, the expectation (49) most employed mothers would leave their jobs at the end of the War was only partly (50) . 41().
A. called up
B. called down
C. called for
D. called after
In the United States the first day nursery was opened in 1854. Nurseries were established in various areas during the (31) half of the 19th century; most of (32) were charitable. Both in Europe and in the U.S., the day-nursery movement received great (33) during the First World War, when (34) of manpower caused the industrial employment of unprecedented numbers of women. In some European countries nurseries were established even in munitions plants, under direct government (35) . Although the number of nurseries in the U.S. also rose (36) , this rise was accomplished without government aid of any kind. During the years following the First World War, (37) , Federal, State, and local governments gradually began to (38) a measure of control in the day nurseries, chiefly by (39) them and by inspecting and regulating the conditions within the nurseries.The (40) of the Second World War was quickly followed by an increase in the number of day nurseries in almost all countries, as women were again (41) to replace men in the factories. On this (42) the U.S. government immediately came to the support of the nursery schools, (43) $6,000,000 in July, 1942, for a nursery-school program for the children of working mothers. Many states and local communities (44) this Federal aid. By the end of the War, in August, 1945, more than 100, 000 children were being cared (45) in daycare centers receiving Federal (46) . Soon afterward, the Federal government drastically (47) its expenditures for this purpose and later (48) them, causing a sharp drop in the number of nursery schools in operation. However, the expectation (49) most employed mothers would leave their jobs at the end of the War was only partly (50) . 40().
A. outburst
B. outbreak
C. breakthrough
D. breakdown