问题
选择题
在平面直角坐标系中，点（4，-3）所在象限是（ ）
A．第一象限
B．第二象限
C．第三象限
D．第四象限
答案
∵点的横坐标4＞0，纵坐标-3＜0，∴点P（4，-3）在第四象限．
故选D．
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在平面直角坐标系中，点（4，-3）所在象限是（ ）
A．第一象限
B．第二象限
C．第三象限
D．第四象限
∵点的横坐标4＞0，纵坐标-3＜0，∴点P（4，-3）在第四象限．
故选D．
One of Jack’s friends loves money very much, and he never gives anything to __1__. Soon he becomes very rich. One day, while he was walking near a river__2__ his friends, he slipped（ 滑倒）and fell into the river. His friends ran to help him, and one of __3__ kneeled（跪）on the ground, held out his hand and said, “Give me your __4__, and I will pull you out!” The rich man’s head went under the __5__ and then came up again, but he didn’t give his hand. Again another one tried, but again __6__ thing happened. Then Jack said，“__7__ my hand and I will pull you out!” The rich man took his hand, and Jack pulled him out of the water. “You don’t know our __8__ very well,” he said to __9__, “when you say “Give’ to him, he does nothing, but when you say ‘Take’, he does what you tell him__10__.”
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