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[求助][讨论]几道资充题请教!
| 都是ETS真题! 拜托请解释!
X 3
8
Y Z
48. In the figure above, are the sums of the 3 numbers along each diagonal equal?
(1)z=3 (2)y-x=0
A):C [F.33, Q.7]
57.If S is an infinite set of real numbers, is there a number in S that is less than every number in S?
(1)Every number in S is an integer. (2)Every number in S is positive.
A):C [F.25. Q.24]
59. 4 dollar amounts, w, x, y, and z, were invested in a business. Which amount was greatest?
(1)y[此贴子已经被作者于2003-7-14 19:13:36编辑过] |
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