古人讲“修身齐家治国平天下”，就把修身做人摆在人生第一位。再如“太上有三不朽”——立德立功立言，也把做人看成是人生根本大事。作为中华民族社会良心、智慧化身的知识分子，历来就有忧国忧民、刚健自强、不屈不挠、经世治国的优良品质。孔子誉之为“士志于道”。历史上从曾参的“士不可以不弘毅”，到李膺的“欲以天下致是非为己任”；从陈藩的“澄清天下之志”，到顾炎武的“天下兴亡，匹夫有责”，都可以看到那种“为天地立心，为生民立命，为往圣继绝学，为万世开太平”的风骨精神和人格力量，其对国家民族和对自己人生负责的精神脉络清晰可见，且历千年而不绝。
这段文字意在说明（）。
| Every year gray whales migrate from the
Bering Sea in Alaska to the Baja Peninsula in Mexico. Eleven gray whales have died in the San Francisco Bay in the last three weeks. No one knows why the whales are dying. Last year 270 whales died along the whales’ migration route. Many people think starvation is the cause. This year the dead whales seem to have more blubber (fat) on them. Twenty years ago, the gray whale was listed as an endangered species. Some scientists think that the larger number of whales makes it hard to find enough food. More whales create more pressure on the food supply, a supply that some scientists say may have dwindled as a result of the warm waters of El Nino. Most of the whales have been dead for many days before they are found and studied. This makes it hard to find the reason for death A. There’s not enough room for them in Alaska. B. There may not be enough food for them in Alaska. C. They get pushed ashore. D. There are more whales to spread disease. [判断题]矛盾双方只是对立不可能统一。()
A.正确 B.错误 [单选题]CR400AF动车组（）前，司机通知列车长做好边门防护。
A.小复位 B.大复位 C.RS复位 D.紧急复位 [单选题] Quantum系列PLC程序执行时的结果保存在（ ）
A.输出继电器 B.元件映像寄存器 C.输出锁存器 D.通用寄存器 [单选题]结核菌主要的传播途径为 ()
A.呼吸道 B.消化道 C.泌尿道 D.生殖道 E.破损的皮肤、黏膜 [不定项选择题]下列抗氧剂适合的药液为硫代硫酸钠
A．弱酸性药液
B．乙醇溶液
A.碱性药液 B.非水性药 C.油溶性维生素类（如维生素 D. E.制剂 [简答题]下行沟通的目标是什么？
[填空题]测定铬的玻璃器皿用（）与（）混合液或洗涤剂洗涤。
[判断题]集中联锁的车站,正线上的出站信号机未开放时,进站信号机不能开放。( )
A.正确 B.错误 我来回答: 提交
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