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It had been assumed that portions of accretion disks would be unstable and that, as a result, clumping of their matter into rings would occur. There is no evidence from observation, however, that accretion disks do, in fact, suffer from these instabilities. In recent work, Abramowicz has shown that added gravitational effects due to general relativity may alter the expected Newtonian gravitational relationships in such a way that the disk remains stable, indicating that it is possible that these predicted instabilities do not occur.
2. It can be inferred from the passage that predictions of the instability of accretion disks were based on which of the following?
(A) A calculation of the probable effects of standard Newtonian gravitational relationships
(B) A calculation of the probable relationship between general relativity and standard Newtonian gravitational relationships
(C) A calculation of the energy released by friction within a compact star
(D) Observation of the x-rays radiated by compact stars（A）
(E) Observation of the clumping of accretion disk matter into rings around compact stars
本题在AB之间选择，最关键在于这一句的理解：
Abramowicz has shown that added gravitational effects due to general relativity may alter the expected Newtonian gravitational relationships in such a way that the disk remains stable
中的added 是什么意思，分词作定语？
Expected如何翻译？牛顿的学说早在本世纪初就被相对论打趴下了，这里怎么还may alter the expected New…?
[此贴子已经被作者于2004-10-5 17:26:55编辑过] | 
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发表于 2004-10-5 17:26:00
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