题干

2017年5月,“一带一路”论坛峰会在北京隆重召开,促进了我国与世界各国的互联互通互惠,“一带一路”地区覆盖总人数约为44亿人,44亿这个数用科学记数法表示(   )

A:  4.4×108

B:4.4×109

C:44×109

D:44×108

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B

同类题1

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地球的清洁师

     一天,地球的老人在一棵大榆树上挂了一块牌子,牌子上写着“地球清洁师报名处”几个字。不到半天功夫,就来了许多报名的。大家七嘴八舌,争着向地球老人作自我介绍。地球老人说:“别急,别急,大家一个一个的讲。”

    “我第一个报名的,我先讲!”海鸥说,“我是海面的清洁师,我能把海面上漂着的死鱼、人们从船上倒下来的剩饭、剩菜都吃掉,让海面变得干净起来。你们说,我是不是地球的清洁师?”

    地球老人点点头说:“是,你是地球的清洁师。”

    长着一身黑羽毛的乌鸦说话了:“别看我长得丑陋,我专吃地面上的脏虫子,像蝇蛆啦,地蚕啦,我把虫子吃掉,地面就会干净多了。我能算一名地球的清洁师吗?”

    地球老人微笑着说:“乌鸦也是地球的清洁师!”

    这时,身上黑亮黑亮的、胸前还有六条腿的屎壳郎也说话了:“你们可能一听到我的名字便会捂起鼻子。我整天跟牛马粪便打交道,用牛粪、马粪做点心,______没有我的话,那草原______会出现粪山,牧场也要变得肮脏不堪。你们说,我算不算地球的清洁师?”

    地球老人笑着说:“屎壳郎也算地球的清洁师!”

    大榆树晃了晃身子说:“说到地球的清洁师,可别忘了我。我会吸收空气中里的灰尘和有毒气体,使地球周围的空气总是干净、清新!”

    地球老人听了大家的话,哈哈地笑起来:“你们能为我做那么多清洁工作,我真要谢谢你们哪!”

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Importance of College Education

    During the high school career, students may begin to question the importance of a college education. They might find themselves asking, “Why is it important to go to college?” The answer is that, more than ever, college graduates enjoy much greater opportunities available to them than those who have not received a college education.

    For many high school students, being able to immediately generate an income after graduation is an appealing thought. They may also be affected by the rising cost of tuition, and while it is true that a higher education may be one of the largest expenses you will ever face, the importance of a college education has become quite evident in terms of earning potential within today's economy.

    Why should you go to college? One important answer to this question is more opportunity. As opposed to generations of the past, high school graduates today are unable to obtain high-paying jobs that were once available. The U.S. has been transformed from a manufacturing-based economy to an economy based on knowledge, and the importance of a college education today can be compared to that of a high school education forty years ago. It serves as the gateway to better options and more opportunity.

    There are additional reasons as to why it is important to go to college. When students experience a post secondary education, they have the opportunity to read books and listen to the lectures of top experts in their fields. This encourages students to think, ask questions, and explore new ideas, which allows for additional growth and development and provides college graduates with more opportunities in the job market over those who have not experienced a higher education.

    The importance of a college education is also stressed because of the opportunity to gain valuable resources during the study. The more connections which are collected during your college career, the more options you will have when you begin your job search. Once you have ended your job search and have started your career, however, the importance of a college education has not been exhausted. Having a college degree often provides for greater promotion opportunity.

    So, why should you go to college? The reasoning does not begin and end with the job aspect. A good education is beneficial from many different viewpoints, and though the importance of a college education is quite evident for many high school students, what is often not as clear is how they will pay for that education.