题干

读我国北方某地区的部分资料,回答15~16题。

【小题1】上述资料表明,导致该地区近十年粮食平均亩产量下降的主要原因(   )
A.“退耕还牧”的面积增大
B.毁林开荒现象严重
C.气候发生异常,出现水旱灾害
D.人口增长过快
【小题2】目前该地区生态环境的主要问题是(   )

A:风沙危害严重

B:水土流失加剧

C:大陆性气候减弱

D:光照条件变差

上一题 下一题 0.0难度 选择题 更新时间:2019-12-01 10:39:46

答案(点此获取答案解析)

B

同类题1

阅读议论文《寒门贵子,贵在奋斗》,完成下列小题。

    ①古人云:“自古寒门出贵子,从来纨绔少伟男。”在当今社会,这样的观点也许有些片面,但它对于当今处于寒门的青年来说确实是起到了一定的鼓励作用。

    ②那么,谁才是今天社会中的“贵子”?

    ③“贵”并不意味着一定要升官发财,也不意味着必须拥有多么高的社会地位,“贵”代表的是人生进步的可能性以及实现人生价值的机会。富二代、官二代无疑符合传统意义上的“贵”,但如果没有一技之长,不能凭借自身本领干事创业,所谓“贵”也不过停留在人生的浅表。相反,白手起家的寒门青年,凭借自身努力打拼出一片天地,努力创造属于自己乃至整个社会的价值,“贵子”的称谓自然当之无愧。作为哈佛大学优秀毕业生代表之一的中国寒门学子何江,曾讲到自己成功的经验:“每到一个更大的地方、更大的平台,你会发现自己不懂的东西很多,而我相对来说,好奇心比较多,我就会有压力去把它学会,让自己不断补足短处。”

    ④寒门贵子的成功很大程度上与他的刻苦奋斗和拥有的社会信任以及社会支持力量相关。如今,网络也为寒门青年走向成功提供了强大的社会支持力量。一位网名为“搬家小伟”的湖北青年石神伟,凭借一系列高难度健身视频,在短视频分享平台上吸引了超过百万粉丝。这位寒门青年从留守儿童、网瘾少年一路走来,用健身不断磨练和改变自己,传递着积极进取、拼搏向上的正能量,感动了无数网友。今天,许多像“搬砖小伟”这样寒门出生的“网红”,借助网络实现了自身的价值,也为社会进步传递着正能量。

    ⑤当今社会,家庭出身、教育背景和工作平台确实影响着一个人的成长路径。但寒门贵子的诞生,在于自己的打拼。一篇题为“寒门贵子”的文章中,有这样一句话:“命运给你一个比别人低的起点是想告诉你,你要靠自己去奋斗出一个绝地反击的故事。”在今天这样一个充满无限可能的时代,寒门能否出贵子,很大程度上并不是一个关于“命运”的话题,而是一个关于“奋斗”的故事。

    ⑥由此看来,努力奋斗,成就寒门。

同类题3

任务型阅读

    Although most games have winners and losers, the goal of sports is not to win every game. The real goals include getting exercise, having fun, and learning important social skills, like sportsmanship.

    Good sportsmanship is all about respect. Good sports (具有运动家品格的人) respect the other players on their team. They respect he players on opposing teams. They respect coaches, and they also respect the referees or other officials involved in their games.____they yell at their teammates and they talk back to coaches or referees.

    Kids usually learn sportsmanship - good and bad - from the adults in their lives.____If parents and coaches show disrespect to other fans, referees, or each other, kids will likely act the same way on the field.

    ____Some of them are very basic and easy to do, like shaking hands with other players before a game. Other examples may take a little more courage, such as acknowledging a great play made by the opposing team.

Learning good sportsmanship is important because it helps you develop an attitude of graciousness (礼貌) and respect that will carry over into all the other areas of your life.____ Being a good sport in the classroom will eventually lead to being a good sport in the workplace.

    So be a good sport in whatever you do!____ When others see you acting in a way that makes it clear that winning isn't the most important thing, you can move on to focusing on the important things, like having fun, getting exercise, and improving your skills!

A. Good sportsmanship can be shown in many ways.

B. On the contrary, bad sportsmanship is all about disrespect.

C. The example you set can be a powerful teaching tool for others.

D. Players ‘parents and coaches set examples that kids tend to follow.

E. We can be good sports by encouraging others but not laughing at them.

F. Starting as a good sport earlier will help you be a good sport as you get old.

G. If you're a good sport on the field, you'll also likely be a good sport in the classroom