问题
单项选择题 A1型题
造成笼养蛋鸡疲劳综合征发病的基础因素是（）
A.皮质骨厚度减少
B.皮质骨厚度增加
C.髓质骨的大量减少
D.骨膜成骨层厚度减少
E.骨膜纤维层厚度减少
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
造成笼养蛋鸡疲劳综合征发病的基础因素是（）
A.皮质骨厚度减少
B.皮质骨厚度增加
C.髓质骨的大量减少
D.骨膜成骨层厚度减少
E.骨膜纤维层厚度减少
参考答案：A
完型填空（10分） One day. A farmer was walking along a road with his son Thomas. The father said, “Look! There’s a horseshoe 31 the ground. Pick it up and put it in your bag.” Thomas said, “It wastes my time. ” His father said 32 but he picked it up himself. When they got to a nearby town, they had a rest. There the farmer 33 the horseshoe and with the money he bought some strawberries. The father and the son went on walking. The sun was well up in the 34 . They soon drank up their water, and there wasn’t a house or even a tree for them to 35 . Thomas felt too 36 to walk on. At this time, his father gave Thomas a strawberry 37 he quickly ate it. After a while, his father gave him 38 strawberry and once again, his son lost no time in putting it in his mouth. And so they 39 . The old farmer gave the strawberries and the son ate them. When Thomas had eaten up all the strawberries, his father said to him, “My dear son, if you picked up that horseshoe, you would have your own strawberries 40 . Always remember the lesson: If you don’t worry about the little things, you’ll find difficult to do the great things.”
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