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7.当代资本主义经济政治的新变化有()。

A、生产资料所有制的变化
B、劳资关系和分配关系的变化
C、社会阶级、阶层结构的变化
D、经济调节机制和经济危机形态的变化
E、政治制度的变化
此题为多项选择题。

9.One of the most important results of research into ageing has been to pinpoint the significance of short-term memory. This faculty is easily (1)_____ as ageing advances. What seems to (2)_____ is that in formation is received by the brain, (3)_____ scans it for meaning in order to decode it at some future time. It looks as if the actual (4)_____ of the short-term memory itself may not change too much (5)_____ age. A young man and a man in his late fifties may (6)_____ be able to remember and repeat a(n) (7)_____ of eight numbers recited to them. But what (8)_____ change is that when the older man is asked to re member anything (9)_____ between the time he is first given the numbers to memorise and the time he is asked to (10)_____ them, he will be much less likely to remember the (11)_____ numbers than the young man. This is because the scanning stage is more easily (12)_____ by other activities in (13)_____ people.
In (14)_____ living one experiences this as a fairly minor (15)_____—a telephone number forgotten while one looks (16)_____ an area code, or the first part of (17)_____ street directions confused with the fast because the last 'turn lefts' and' turn rights' have interfered (18)_____ remembering the first directions. In more formal learning, however, the (19)_____ of short-term memory is more than just a mild social embarrassment. It can be a serious bar to further (20)_____ or indeed to any progress at all.

A.discovered
B.strengthened
C.displayed
D.disturbed