题干

看足球比赛的某同学突发奇想,如果在空中飞行的足球所受一切外力突然消失,关于足球的运动情况,下列判断正确的是(   )

A:做匀速直线运动

B:停在空中静止不动

C:飞行路径不受影响

D:竖直下落

上一题 下一题 0.0难度 选择题 更新时间:2014-08-18 04:27:16

答案(点此获取答案解析)

A

同类题1

阅读下面选文,完成问题。

献你一束花

冯骥才

    ①鲜花理应呈送给凯旋的英雄,难道献给这黯淡无光的失败者?

    ②她一直垂着头。四天前,她从平衡木上打着旋儿跌在垫子上时,就把这美丽而神气的头垂下来。现在她回国了,走入首都机场的大厅,简直要把脑袋藏进领口里去。她怕见前来欢迎的人们,怕记者问什么,怕姐姐和姐夫来迎接她,甚至怕见到机场那个热情的女服务员——她的崇拜者,每次出国经过这里时,都跑来帮着她提包儿……有什么脸见人,大败而归!

    ③这次世界性比赛,她完全有把握登上平衡木和高低杠“女王”的宝座,国内外的行家都这么估计,但她的表演把这些希望的灯全都关上了。

    ④两年前,她第一次出国参加比赛,夹在许多名扬海外的姑娘们中间,不受人注意,心里反而没负担,出人意料地拿了两项冠军。回国时,就在这机场大厅里,她受到空前热烈的迎接。许多只手朝她伸来,许多摄影机镜头对准她,一个戴眼镜的记者死死纠缠着问:

    ⑤“你最喜欢什么?”她不知如何回答,抬眼看见一束花,便说:“花!”于是就有几十束花朝她塞来,多得抱不住。两年来多次出国比赛,她胸前挂着一个又一个亮晃晃的奖牌回来,迎接她的是笑脸、花和摄影机雪亮的闪光。是不是这就加重她的思想负担?愈赢就愈怕输,成绩的包袱比失败的包袱更重。精神可以克服肉体的痛苦,肉体却无法摆脱开精神的压力。这次她在平衡木上稍稍感觉自己有些不稳,内心立刻变得慌乱而不能自制。她失败了,并且跟着在下面其他项目的比赛中一塌糊涂地垮下来……

    ⑥本来她怕见人,走在队伍最后,可是当她发现很少有人招呼她,摄影记者也好像有意避开她时,她感到冷落,加重了心中的沮丧和愧疚,纵使她有回天之力,一时也难补偿,她茫然了。是啊,谁愿意与失败者站在一起。

    ⑦忽然她发现一双脚停在她眼前。谁?她一点点向上看,深蓝色的服装,长长的腿,铜衣扣,无檐帽下一张洁白娴静的脸儿。原来是机场那女服务员。正背着双手,含笑对她说:“我在电视里看见了你们比赛,知道你今天回来,特意来迎接你。”

    ⑧“我真糟!”她赶紧垂下头。

    ⑨“不,你同样用尽了汗水和力量。”

    ⑩“我是失败者。”

    “谁都不能避免失败。我相信,失败和胜利对于你同样重要。让失败属于过去,胜利才属于未来。”女服务员的声音柔和又肯定。

    她听了这话,重新抬起头来。只见女服务员把背在身后的手向前一伸,一束五彩缤纷的花捧到她的面前。浓郁的香气竟化作一股奇异的力量注入她的身体。她顿时热泪满面。

    怎么?花,理应呈送给凯旋的英雄,难道也要献给黯淡无光的失败者?

同类题3

阅读理解

    Jeanne Calment, a French woman, became a record breaker on 17 October of 1995, when at the age of 120 years and 238 days, she became the longest-lived human being on record. A Japanese man died in 1986 at the age of 120 years and 237 days.

    Jeanne Calment lives in a small old people's home in the south of France; her husband, her only child and her grandson have all died. She is nearly blind and deaf and is always in a wheelchair, but her doctor describes her as being more like a 90-year-old in good health than someone of 120. She still has a lively sense of humor. When asked on her 120th birthday what she expected of the future, she replied: A very short one. She also remarked that she thought the good Lord had forgotten all about her.

    So what is the key to a long life? According to some doctors, diet, exercise and no smoking are the three important factors. Jeanne Calment has followed two of the tips. She has always eaten a healthy diet, and she used to do exercise every day until she broke her leg at the age of 115. However, until recently she drank two glasses of strong red wine a day, and she does smoke (now only a little). Besides, Jeanne Calment might have got very good genes from her parents. Her father lived to the age of 94 and her mother to 86.

    A local lawyer bought her house when she was 80 under an agreement that he would pay her some money every year until her death. It must have seemed a good move at the time, but so far the lawyer has paid her at least three times the value of the house. Every year on her birthday Jeanne Calment sends him a card saying: Sorry, I'm still alive!