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问题 单项选择题

视神经胶质瘤的CT表现

A．与视神经分界清

B．钙化多见

C．肌锥外肿块

D．视神经柱状增大、视神经管扩大

E．增强呈“路轨”征

答案

参考答案：D

解析：视神经胶质瘤的CT表现为视神经条状或梭形增粗，增强轻度强化，侵及视神经管内段而引起视神经管扩大，肿瘤无钙化征象。

单项选择题

The more television children watch, the less competent they are in mathematical knowledge. More than a third of children in the United States watch television for more than five hours a day; in South Korea the figure is only 7 percent. But whereas less than 15 percent of children in the United States understand advanced measurement and geometric concepts, 40 percent of South Korean children are competent in these areas. Therefore, if United States children are to do well in mathematics, they must watch less television.
Which one of the following is an assumption upon which the argument depends

A．Children in the United States are less interested in advanced measurement and geometric concepts than are South Korean children.

B．South Korean children are more disciplined about doing schoolwork than are children in the United States.

C．Children who want to do well in advanced measurement and geometry will watch less television.

D．A child’s ability in advanced measurement and geometry increases if he or she watches less than one hour of television a day.

E．(E) The instruction in advanced measurement and geometric concepts available to children in the United States is not substantially worse than that available to, South Korean children.
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判断题

天然石板材以花岗石为主，大理石也可以作幕墙板材。
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