我国煤矿生产主要是地下作业，经常受到（）、（）、（）、（）、（）威胁。

患者女，35岁，1年前曾扭伤左膝关节，保守治疗后症状消失，患者未予注意，近3个月来左膝关节疼痛不适伴活动受限，1个月来膝关节肿胀明显，穿刺抽出血性液体，查体：膝关节疼痛呈弥漫性，Lachman试验阴性，前抽屉试验阴性，麦氏征阳性，最有可能的诊断是（）

A.左膝关节ACL损伤

B.左膝关节滑膜软骨瘤病

C.左膝关节绒毛结节滑膜性炎

D.左膝关节滑膜肉瘤

E.左膝关节损伤二联症

车辆旁承游间的运用限度是多少？如何测量？过大或过小时各有何害处？

(13分)从用人、纳谏、开明的民族政策三方面说明“贞观之治”局面是如何形成的？

The appearance of the island when I came on deck next morning was altogether changed. Although the breeze had now utterly failed, we had made a great deal of way during the night, and were now lying becalmed about half a mile to the southeast of the low western coast. Grey-colored woods covered a large part of the surface. ③This even tint was indeed broken up by streaks of yellow sandbreak in the lower lands, and by many tall trees of the pine family, out-topping the others — some singly, some in clumps, but the general coloring was uniform and sad. ④The hills ran up clear above the vegetation in spires of naked rock. All were strangely shaped, and the Spy Glass, which was by three or four hundred feet the tallest on the island, was likewise the strangest in configuration, running up sheer from almost every side, ⑤and then suddenly cut off at the top like a pedestal to put a statue on.

文中④段画线部分翻译正确的是（）。

A.每一座山上都有光秃秃的岩石清晰地暴露在高山植被的顶端。

B.每一座山峰都在裸露的岩石中升到植被的顶端。

C.每一座山峰都清晰地升到裸露的岩石的植被上。

阅读材料，回答问题。

“城镇化”、“老有所养”等成为经济社会发展中的热门话题。古话说：老有所养，老有所依。随着电视剧《老有所依》的热播，引发了人们对人口老龄化，养老服务需求的关注和热评。晓涛一家就此发表看法。

注：居家养老是指老人居住在家，由社区等为他们提供养老服务；机构养老是指在福利院、养老院、老年公寓等机构养老。

运用“探索世界与追求真理”的知识，结合材料回答应如何解决我国的养老问题？