准确地说，投资者在委托买卖证券时支付的费用有（）。
The towers of a suspension bridge serve as a rigid framework to which'the cables
A. boundary
B. skeleton
C. enclosure
D. material
More and more people believed that we can teach children to be intelligent in the
A. we can teach them reading or arithmetic
B. a set of developed skills
C. school work and intelligence tests
D. according to ability at an early age
E. a fixed entity
F. the most important factors in the environment are language and psycholog-ical aspects of the parent-child relationship
The author feels her life unreal .because__________.
A. she has become a machine .
B. she has to deal with data
C. she loses the interest in social life.
D. she often has nightmares
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