问题
单项选择题
负反馈系统的作用是
A．进一步减弱机体的功能活动
B．保持机体功能活动 的稳定性
C．加强机体功能活动的精确性
D．减弱机体功能活动的精确性
E．进一步加强机体的功能活动
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
负反馈系统的作用是
A．进一步减弱机体的功能活动
B．保持机体功能活动 的稳定性
C．加强机体功能活动的精确性
D．减弱机体功能活动的精确性
E．进一步加强机体的功能活动
参考答案：B
| 完形填空 A traveling ship was wrecked during a storm at sea.Only two of the men aboard__1__to swim to a deserted island.They agreed to__2__to God on opposite sides of the island. The first thing they prayed for was__3__.The next morning, the first man saw a fruitbearing tree on his side of the island, and he__4__eat its fruit.But the side of the other man__5__without food. After a week, the first man became__6__and decided to pray for a wife.The next day, a__7__swam to his side of the island.But on the other side of the island, there was__8__.Soon after that the first man prayed for a house, clothes and__9__food.Like magic, all of these things were given to him. __10__, the first man prayed for a ship__11__he and his wife could leave the island.In the morning the found a ship on his side of the island.As the ship was about to leave, the first man__12__a voice from Heaven, "__13__are you leaving your compainon on the island?" "My__14__are mine alone since I was the one who prayed for them, "the first man answered."His prayers were all unanswered and so he doesn't__15__anything." "You are__16__!"the voice criticized him."He had only one prayer, which I answered.If not for that, you would not have__17__any of my blessings.""Tell me, "the first man asked the voice."What did he pray for?Why would that make me__18__him anything?""He prayed that all your prayers would be__19__." For all we know, our blessings are not the__20__of our prayers alone, but those of another praying for us.So what you do for others is more important than what you do for yourself. | ||||
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