问题 单项选择题

核素显像与其他影像学检查方法的比较,错误的是

A.核心脏病学以反映心脏功能和代谢信息
B.超声心动图能反映心脏及其大血管结构、功能,对室壁、血管及瓣膜的运动可显示和测量
C.能显示心脏大血管及周围组织器官的横段面结构是CT的主要优点
D.MRI在心肌状态显示,反映心肌频谱方面有其独特的优势
E.CT和MRI对心脏瓣膜及其运动的实时显示好于超声心动图,对心肌灌注、心肌缺血及其梗死的诊断和鉴别诊断好于核素显像

答案

参考答案:E

解析:CT和MRI对心脏瓣膜及其运动的实时显示不如超声心动图,对心肌灌注、心肌缺血及其梗死的诊断和鉴别诊断不如核素显像。

单项选择题

Questions 61—65 are based on Passage Two:Passage TwoAs the 21st century begins, a number of leaders in politics, education, and other professions believe that the US must adopt some new values to go along with the old traditional ones. What new values should Americans adopt This is a very difficult question to answer. Certainly, a greater value should be placed on the conservation of natural reasources; Americans should learn to use less and waste less. But conservation has never been a p value to Americans, who have believed that their country offered an endless,abundant supply of natural resources.Recently, progress has been made—more and more Americans are recycling their paper,cans,bottles,and other goods—but old wasteful habits died hard. Furthermore,the need to protect the environment may conflict with the need for jobs,as in the Northwest ,where conservationists battle lumber companies that want to cut down ancient redwood trees. A belief in the value of conservation is still compared with other American values; it can become per only as Americans see the need for it more clearly.In addition,Americans may need to place a p value on cooperation on a national scale to achieve important national objectives. The American idea of the national good has never been based on national cooperation but rather on the freedom of the individual, maintaining those conditions that provide the greatest freedom and prosperity for the individual . It is far more difficult for Americans to accept shared sacrifice for the common good and wellbeing of the entire country. For example ,although the majority of Americans believe that it is extremely important to balance the national budget and reduce the deficit, they do not want to see cuts in government programs that benefit them personally.The American value of competition also hinders the development of a spirit of national cooperation. Competition sometimes encourages feelings of suspicion rather than the mutual trust that is necessary for successful national cooperation.Although Americans often cooperate successfully on the local level—in neighborhood groups and churches, for example, on the national level, they may see themselves as part of an interest group that is competing with other interest groups for government funds. A request by the national government for shared sacrifice may be seen as coercive and destructive rather than voluntary and constructive. However, the demands for the 21st century may compel Americans to place a greater value on national cooperation to solve problems that affect them all, directly and indirectly.

According to the passage, which of the following is NOT true()

A.Some Americans would not accept the value of conservation and environment protection, because this value would probably make them unemployed.

B.Many Americans have been used to wasting, so it will be difficult for them to accept the new value of conservation.

C.Some old values are still having a p influence on American people, although they are harmful in this new age.

D.Most Americans have fully realized the need to protect the environment, so they have taken measures to recycle junked goods.

单项选择题