问题
填空题
长为3的线段AB的端点A，B分别在x，y轴上移动，动点C（x，y）满足
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答案
解析：动点C（x，y）满足
=2AC
，则B（0，CB
y），A（3x，0），3 2
根据题意得9x2+
y2=9，即x2+9 4
y2=1．1 4
答案：x2+
=1y2 4
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长为3的线段AB的端点A，B分别在x，y轴上移动，动点C（x，y）满足
|
解析：动点C（x，y）满足
=2AC
，则B（0，CB
y），A（3x，0），3 2
根据题意得9x2+
y2=9，即x2+9 4
y2=1．1 4
答案：x2+
=1y2 4
| 完形填空。 | ||||
| The most important match was held yesterday afternoon.That was the last match in the league (联). Until yesterday our team had played very well almost won 1 game this year. The match was 2 the team from No.64 Middle Schooland ours.We 3 a little afraid of them because their team almost as strong as our team. 4 we would do our best and we were sure that we would win. Before the match, our teacher told us not to 5 ; we should pass the tall often and play together. The match began. Some of their players werehard to 6 when they got the ball. Soon one oftheir players kicked a goal. Though we were a little 7 , we played harder and harder. Liu Dong, oneof the 8 players in our team, got the ball. We kept passing it to each other and we played so welltogether that they couldn't get the ball. Soon we kicked a goal. We continued passing the ball to each other 9 they couldn't get it easily.Soon wekicked another Finally we beat them4:2.We were at the 10 of the league. | ||||
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