题干

右图为近地面某气压场中的受力平衡的风向图,图中字母a代表的是(    )

A:水平气压梯度力

B:地转偏向力

C:摩擦力

D:近地面风向

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答案(点此获取答案解析)

B

同类题2

阅读【材料一】和【材料二】,完成小题。

【材料一】

    先帝创业未半而中道崩殂,今天下三分,益州疲弊,此诚危急存亡之秋也。然侍卫之臣不懈于内,忠志之士忘身于外者,盖追先帝之殊遇,欲报之于陛下也。诚宜开张圣听,以光先帝遗德,恢弘志士之气,不宜妄自菲薄,引喻失义,以塞忠谏之路也。

    宫中府中,俱为一体,陟罚臧否,不宜异同。若有作奸犯科及为忠善者,宜付有司论其刑赏,以昭陛下平明之理;不宜偏私,使内外异法也。

    侍中、侍郎郭攸之、费祎、董允等,此皆良实,志虑忠纯,是以先帝简拔以遗陛下。愚以为宫中之事,事无大小,悉以咨之,然后施行,必能裨补阙漏,有所广益。

    将军向宠,性行淑均,晓畅军事,试用于昔日,先帝称之曰能,是以众议举宠为督。愚以为营中之事,悉以咨之,必能使行阵和睦,优劣得所。

    亲贤臣,远小人,此先汉所以兴隆也;亲小人,远贤臣,此后汉所以倾颓也。先帝在时,每与臣论此事,未尝不叹息痛恨于桓、灵也。侍中、尚书、长史、参军,此悉贞良死节之臣,愿陛下亲之信之,则汉室之隆,可计日而待也。

【材料二】

    飞事亲至孝,家无姬侍。吴玠素服飞,愿与交欢,饰名姝遗之,飞曰:“主上宵旰,宁大将安乐时耶!”却不受。玠大叹服。或问:“天下何时太平?”飞曰:“文臣不爱钱,武臣不惜死,天下太平矣。”师每休舍,课将士注坡跳壕,皆重铠以习之。卒有取民麻一缕以束刍者,立斩以徇。卒夜宿,民开门愿纳,无敢入者,军号“冻死不拆屋,饿死不掳掠”。卒有疾,亲为调药。诸将远戍,飞妻问劳其家,死事者,哭之而育其孤。有颁犒,均给军吏,秋毫无犯。善以少击众。凡有所举,尽召诸统制,谋定而后战,故所向克捷。猝遇敌不动。故敌为之语曰:“撼山易,撼岳家军难。”张俊尝问用兵之术,飞曰:“仁、信、智、勇、严、阙一不可。”每调军食,必蹙额曰:“东南民力竭矣!”好贤礼士,雅歌投壶,恂恂如儒生。每辞官,必曰:“将士效力,飞何功之有!”然忠愤激烈,议论不挫于人,卒以此得祸。

(选自毕沅《续资治通鉴·宋纪》)

【注释】①吴玠(1093—1139):南宋抗金名将。字晋卿,早年从军御边,抗击西夏建功。后领兵抗金,和尚原之战中,大败金兵兀术部,破川陕路金兵进攻。因功官至四川宣抚使。②宵旰(gàn):“宵衣旰食”的略语。天不亮就穿衣起身,天晚了才吃饭。用来称颂帝王勤于政事。③注坡:谓从斜坡上疾驰而下,与“跳壕”同为当时军事训练科目。④统制:南宋军官名,隶属于都统制。⑤张俊(1086~1154):南宋人,曾与岳飞、韩世忠,刘光世并称南宋中兴四将,后转主和,成为谋杀岳武穆的帮凶之一,并以此博得宋高宗深宠。

同类题4

阅读下列短文:

Why College Is Not Home

           The college years are supposed to be a time for important growth in autonomy(自主性) and the development of adult identity. However, now they are becoming an extended period of adolescence, during which many of today’s students and are not shouldered with adult responsibilities.

For previous generations, college was decisive break from parental control; guidance and support needed help from people of the same age and from within. In the past two decades, however, continued connection with and dependence on family, thanks to cellphones, email and social media, have increased significantly. Some parents go so far as to help with coursework. Instead of promoting the idea of college as a passage from the shelter of the family to autonomy and adult responsibility, universities have given in to the idea that they should provide the same environment as that of the home.

            To prepare for increased autonomy and responsibility, college needs to be a time of exploration and experimentation. This process involves “trying on ” new ways of thinking about oneself both intellectually(在思维方面) and personally. While we should provide “safe spaces” within colleges, we must also make it safe to express opinions and challenge majority views. Intellectual growth and flexibility are fostered on debate and questioning.

Learning to deal with the social world is equally important. Because a college community(群体) differs from the family, many students will struggle to find a sense of belonging. If students rely on administrators to regulate their social behavior and thinking pattern, they are not facing the challenge of finding an identity within a larger and complex community.

Moreover, the tendency for universities to monitor and shape student behavior runs up against another characteristic of young adults: the response to being controlled by their elders. If acceptable social behavior is too strictly defined(规定) and controlled, the insensitive or aggressive behavior that administrators are seeking to minimize may actually be encouraged.

          It is not surprising that young people are likely to burst out, particularly when there are reasons to do so. Our generation once joined hands and stood firm at times of national emergency. What is lacking today is the conflict between adolescent’s desire for autonomy and their understanding of an unsafe world. Therefore, there is the desire for their dorms to be replacement homes and not places to experience intellectual growth.

Every college discussion about community values, social climate and behavior should include recognition of the developmental importance of student autonomy and self-regulation, of the necessary tension between safety and self-discovery.