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[填空题]
Leukemia
Leukemia is the most common type of cancer kids get, but it is still very rare. Leukemia involves the blood and blood-forming organs, such as the bone marrow.
(1) A. kid with leukemia produces lots of abnormal white blood cells in the bone marrow. Usually, white blood cells fight infection, but the white blood cells in a person with leukemia don’t work the way they’re supposed to.
(2) The abnormal white blood cells multiply out of control, filling the bone marrow and making it hard for enough normal, infection-fighting white blood cells to form. Other blood cells — such as red blood cells ( that carry oxygen in the blood to the body’s tissues) and platelets (that allow blood to clot) — are also crowded out by the white blood cells of leukemia. These cancer cells may also move to other parts of the body, including the bloodstream, where they continue to multiply and build up.
Although leukemia can make
[单项选择]The most common symptom associated with bladder cancer is（ ）
A. burning on urination.
B. frequent infections.
C. painless hematuria.
D. decreasing urine output.
[单项选择]What is the most common type of computer network used in companies
A. The databases of information.
B. The public access networks.
C. The super computer networks.
D. Intranets.
[填空题]Corporation Merger
The most common kind of consolidation today is the merger. A merger occurs when two or more companies get together to from one company
With the deregulation of natural gas, the nation’s 20 interstate pipeline companies became fearful of cutthroat competition. Some felt that they could increase their efficiency and improve their market flexibility by merging. In 1985 Internorth of Omaha paid $ 2, 3 billion for Houston Natural Gas Corporation, (8) . The system connected markets from coast to coast and raised sales to $10 billion.
On occasion, mergers have occurred between smaller companies in an industry dominated by a few giant firms. These smaller companies claim that (9) . They maintain that such action increases competition instead of reducing it. The Antitrust Division of the Justice Department has not always agreed with them. Four major waves of mergers have taken place in this country. The first started in 1887, just prior to the p
[简答题]The most common prescription insomnia medicine is a sedating antidepressant called trazodone, even though there’s no good evidence that it offers more than a two-week benefit, and it comes with side effects.
