甲、乙两人玩一种游戏：5个球上分别标有数字1、2、3、4、5，甲先摸出一个球，记下编号，放回后乙再摸出一个球，记下编号，如果两个编号的和为偶数算甲赢，否则算乙赢。（1）求编号的和为6的概率；（2）这种游戏规则公平吗？试说明理由。
(1)
------------6分 (2)不公平
(1)本小题属于古典概型的概率总的结果数为
个，其中编号和为6的有(2,4)(4,2),(1,5),(5,1),(3,3)共5个，所以事件的概率为
.
(2)编号和为偶数的事件有(2,4),(4,2),(1,3),(3,1),(1,5),(5,1),(3,5),(5,3),(1,1),(2,2),(3,3),(4,4),(5,5)共13个，编号和为奇数的共25-13=12个，所以
.因而不公平。
完形填空(共20小题;每小题1.5分，满分30分) 阅读下面短文，从短文后各题所给的四个选项(A，B，C，D)中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。 Summer is the best time on the Island of the Blue Dolphins (海豚). The sun is warm then and the winds blow out of the west, 16 out of the south. It was 17 these days that the ship might return and now I 18 most of my time on the rock, 19 out from the headland（水中凸起的陆地） into the east, towards the country 20 my people had gone, across the 21 that was never-ending. Once 22 I watched, I saw a small object which I took to be the ship, but a stream of water 23 from it and I knew that it was whale (鲸鱼)spouting (喷水). During those summer days I saw nothing 24 . The first storm of winter 25 my hopes. If the white men's ship were 26 for me it would have come during the time of good 27 . Now I would have to wait 28 winter was gone, maybe longer. The thought of being 29 on the island while so many suns rose 30 the sea and went 31 back into the sea 32 my heart with loneliness. I had not felt so 33 before because I was sure 34 the ship would return as Matasaip had said 35 would. Now my hopes were dead.
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