关于皮肤皱襞的形成及征象，以下哪项是正确的
A．老年皮肤和皮下组织结构日益弛缓和松动，是因重力致皮肤垂落而成
B．由于表情肌收缩的结果
C．皱襞与该部肌纤维走向相垂直
D．眼外眦部的放射状条纹称为"笑"皱襞
E．皱纹与皱襞是同一含义，其形成缘由也一样
参考答案：A
解析：[解题思路] 皮肤皱襞的形成是因老年皮肤和皮下组织结构日益弛缓和松动，重力致皮肤垂落而成。
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hearts. They are the 1______ people to you in the world. However, many teenagers like you have trouble 2______ with their parents. They always complain (抱怨) that their parents say too much instead of listening to what they're thinking. When they do something wrong, getting away from parents seems to be the only 3______. In fact, what your parents do just shows love for you. They love you more than they love 4______. Whenever you need help, they are always there, standing by you. Try to put yourself' into their shoes, and you'll understand them 5_____. |