问题
单项选择题 A型题
不属于髋关节的准确描述是（）
A.由股骨头和髋臼组成
B.关节囊厚而坚韧
C.股骨颈全部包于关节囊内
D.稳定性大于灵活性
E.关节囊内有股骨头韧带
答案
参考答案：C
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不属于髋关节的准确描述是（）
A.由股骨头和髋臼组成
B.关节囊厚而坚韧
C.股骨颈全部包于关节囊内
D.稳定性大于灵活性
E.关节囊内有股骨头韧带
参考答案：C
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| Life today has brought new problems. One of 1 problems is pollution. Water pollution 2 our rivers and lakes dirty. It kills our fish and polluted our 3 water. Noise pollution makes us 4 louder and become angry more easily. Air pollution is the most serious kind of pollution. It's bad for all 5 things in the world. Cars, planes and factories all pollute our air every day. Sometimes the polluted air is 6 it is like a quilt over a city. This kind of quilt is 7 smog (烟雾). Many countries are making rules to fight pollution. Factories must now clean their water before it is thrown away, and they mustn't blow dirty smoke into the air. We need to do many other things. We can put waste things in the dustbin and not throw it on the ground. We can go to work by bike or with our friends in the same car. If there are 8 people driving, there will be less pollution. Rules are not 9 . Every 10 must help fight pollution. | ||||
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