材料一：1880年9月16日，左宗棠创办的兰州机器织呢局（呢绒纺织工厂）开工。他委托胡雪岩向德国商人购买机器设备1200多件，并从德国聘请匠师十多人。左宗棠离开兰州后，德国技师三年合约期满回国。1884年初织呢局因锅炉破裂从此停工。

——整理自《科普中国》

材料二：新中国初期，我国石油严重短缺，60多岁的地质学家李四光带领技术人员跋山涉水进行石油勘探。在勘探最困难的时候，李四光鼓励大家：“我们一线的生机，还是在我们的民族，大家打起精神，举起锄头向前挖去。”终于，1959年勘探出了大庆油田。随后，在各部门的共同努力下，大港、胜利、华北大油田相继找到，中国摘掉了“贫油”的帽子。

——摘选自岳麓版高中历史教材选修四

材料三：党的十八大以来，政府对科技创新投入快速增长（见下图），总规模已位居世界前列，天宫、蛟龙、天眼、悟空、墨子、大飞机等重大科技成果相继问世。

先通读下面的短文，然后根据短文内容和所给首字母，在空格内填入一个适当的词，使短文意思完整。
    Mental health is about the way you think and feel and your ability to deal with ups and downs. Even though you are mentally healthy, it hardly m ____ that you don’t have a mental health problem.
    Mental health is everyone’s b____ . We all have times when we feel down or stressed. Most of the time those feelings pass, but sometimes they develop into a more serious problem. It seems that our mental health doesn't always s____  the same. It can change as the environment changes and as you move t ____ different stages(阶段) of your life.
    Here are four practical ways to look after your mental health. M ____  simple changes to how you live doesn't cost much or take up lots of time. Anyone can f ____ them.
●Talk about your feelings. It can help you stay in good mental health. It isn't a sign of weakness, but p ____ of your ability to do what you can to stay healthy.
●Eat well. What you eat and how you feel are c ____  connected. A proper diet can have a good effect on your mental health.
●Keep in touch. Friends and family members can offer various a ____  which may help you keep active and solve practical problems.
●Take a break. It could be a weekend exploring new places to enjoy the nature, or even a ten-minute break from doing your homework. A few minutes can be e____ to relax you.

阅读下面的唐诗，完成小题。
                                                                                         《塞下曲》(其一)

                                                                                                 李白

                                                             五月天山雪，无花只有寒。笛中闻折柳，春色未曾看。
                                                            晓战随金鼓，宵眠抱玉鞍。愿将腰下剑，直为斩楼兰①。
【注】①楼兰：这里泛指侵扰西北的敌人。