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【单选题】
设x为，x*为绝对值，说明[-x*]补=[-x]补在什么时候成立A.
当 x 为正数时成立
B.
当 x 为负数时成立
C.
任何时候都成立
D.
任何时候都不成立
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【简答题】与十进制数4625等值的十六进制数为
【单选题】Why is it considered foolish to make an appointment too far in advance in some countries?
A.
Because such an appointment might be neglected by busy people.
B.
Because people pay little attention to an appointment made a week earlier.
C.
Because such an appointment might cause much inconvenience to others.
D.
Because such an appointment might be forgotten.
【单选题】听力原文：M: It is reported that in some countries banks are not allowed to make investments in equity securities. W: Generally commercial banks may invest only in those securities that are rated as 'inves...
A.
In equity securities.
B.
In personal funds.
C.
In securities rated as investment grade.
D.
In property markets.
【简答题】阅读理解。 In many countries, people can use their hands to eat chicken leg. But in some countries, people only eat with their right hands. They never eat with left hands. They think it is bad table manner...
【简答题】It is (polite) ______ to put food into your mouth with a knife in some countries.
【简答题】桥梁的两阶段设计是指 和 。
【简答题】桥梁两阶段设计是 和 。
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