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体质健康标准锻炼中常见运动性伤病的处理及预防单元测验

1、单选题：
‌急性运动损伤后，要及时对损伤部位进行冰敷，每次冰敷的时间         为宜​
选项：
A: 10分钟以内
B: 10-15分钟 
C: 15-20分钟
D: 20-25分钟
答案: 【 15-20分钟】点我阅读全文

1.4 Quiz

1、判断题：
‎The author thinks that students' language deficits should be blamed on schools because the schools never teach grammar.‌
选项：
A: 正确
B: 错误
答案: 【 错误】点我阅读全文

8.1随堂测验

1、判断题：
‌Good delivery is listener-centered.​
选项：
A: 正确
B: 错误
答案: 【 正确】点我阅读全文

第一章单元测试

1、单选题：
‌我国的《中华人民共和国刑法》，称为（　）‍
选项：
A: 单行刑法
B: 附属刑法
C: 刑法典
D: 刑法通则
答案: 【 刑法典】点我阅读全文

第一单元测验

1、单选题：
‌下列跟火无关的学说有 ‍
选项：
A: 现代燃烧学说
B: 相对论
C: 氧学说
D: 燃素学说
答案: 【 相对论】点我阅读全文

平面四杆机构基本形式及应用随堂测验

1、单选题：

如图所示的铰链四杆机构中，  是双曲柄机构。

‎

‎选项：
A: 图(a)
B: 图(b)
C: 图(c)
D: 图(d)
答案: 【 图(c)】点我阅读全文

第二讲 预备知识—函数 随堂测验

1、单选题：

​

‏选项：
A:
B:
C:
D:
答案: 【 】点我阅读全文

第一周，第一章 测验

1、多选题：
​以下哪种属于五大通用塑料？‏​‏
选项：
A: 聚乙烯
B: 聚碳酸酯
C: 聚酰胺
D: 聚氯乙烯
答案: 【 聚乙烯;
聚氯乙烯】点我阅读全文

Dealing with Unfamiliar Words

1、单选题：
Task: Read the article about a kind of fitness training called HIIT. Then choose the best explanations for some of the words and expressions. ​ ​HIIT: Is the fitness scene's biggest fad doing more harm than good?​1.       High Intensity Interval Training (HIIT) has been the darling of the fitness scene for a few years now. Fundamentally, it involves repetitions of short bursts of intense, 'maximal effort' exercise; usually for anywhere between 20 to 40 seconds.​2.       The theory behind HIIT is very appealing. By working out at your top level of exertion, you burn more calories in a short space of time than other workouts. What's more, studies show that your metabolism stays in a heightened state for up to 24 hours after you've finished. And in practice, HIIT can have impressive results. It's an effective tool for increasing cardiovascular fitness, sculpting your physique and increasing metabolic rate. Hence why HIIT classes are popping up all over the place. People have become accustomed to turning up to a class with loud music and dark lighting, just like a night club – and leaving in the same state: barely able to walk.​3.       However ... I have a big bone to pick with HIIT, which is that there's often no focus on form or technique in these classes, even though it's now prescribed as the go-to form of exercise for everyone. Instead, the measure of a good HIIT sessions seems to be how 'destroyed' you feel after a class. It's inevitable that problems arise from this 'all pain for gain' approach.​4.       One issue is simply that people are doing workouts that they're not conditioned for. There is no emphasis on flexibility, mobility or activation in many HIIT classes; yet all are incredibly important in keeping the body fit and healthy as you age.​5.       What's more, I regularly see people “smashing” multiple HIIT classes a day, 5-6 days per week. HIIT should not be done more than three times per week (at most), because it is so strenuous. It puts an incredible strain on your nervous system, joints and muscles; especially if you are overweight and unfit.​6.       The HIIT approach to exercise has gone OTT. It's entering unsustainable territory.​7.       HIIT’s rise in popularity is symptomatic of what is wrong with the fitness industry as a whole: a brazen disregard of the fundamentals, and a detrimental “one size fits all” mentality. Having trained 100s of clients in my five years as a personal trainer, the biggest issues most people have are a lack of flexibility, mobility and core strength, on top of muscle activation issues. All of the above can lead to chronic injuries and are further exacerbated by HIIT.​8.       My belief is that everyone should try to train like athletes do. I don’t mean the same training frequency and intensity as athletes, I mean the mentality and the approach. Having trained as a competitive sprinter for four years, I learned to take every aspect of my life into account: sleep, rest days, nutrition and weaknesses. I learnt to listen to my body. Some days I would wake up feeling tired and fatigued, so on those days I wouldn’t train hard. I would do something less intense and focus on recovery.​9.       Remember: burning calories isn't the be all and end all of fitness and good health. Yes, HIIT may burn more calories than any other form of exercise, but it's no use if it leads to injury or illness. Overtraining is a real danger: it can ruin your immune system, cause insomnia, affect your appetite and release cortisol, which in turn can make you more likely to put on fat.​                                             ********************************************​​What does the word “fad” in the title probably mean?​
选项：
A: Craze.
B: Program.
C: Liar.
D: (This is a filler. Do not choose this answer.)
答案: 【 Craze.】点我阅读全文

第一章单元测验

1、单选题：
‏下列关于世界上第一台电子计算机ENIAC的叙述中，错误的是________。‌
选项：
A: 世界上第一台计算机是1946年在美国诞生的
B: 它主要用于军事目的和科学计算，例如弹道计算 
C: 确定使用高级语言进行程序设计
D: 它主要采用电子管作为主要电子器件
答案: 【 确定使用高级语言进行程序设计】点我阅读全文