题干

下面关于惯性的说法中,正确的是(   )

A:运动速度大的物体比速度小的物体难以停下来,所以运动速度大的物体具有较大的惯性

B:抛出去的标枪、手榴弹等是靠惯性向远处运动的

C:在完全失重的情况下,物体的惯性将消失

D:材料不同的两个物体放在地面上,用一个相同的水平力分别推它们,则难以推动的物体惯性大

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答案(点此获取答案解析)

B

同类题3

阅读理解

    For only the second time in her life, actress Olivia Holt, 15, traveled to New York---this time to catch the award—winning Disney Broadway show Newises. Adriana Palmieri, the reporter from Time for Kids(TFK),was there with Olivia and interviewed Olivia about the experience and her career. “I think the show is inspiring other people to make a big influence on the world today,” Olivia told TFK.

    Olivia is no stranger to the stage. This young star started acting at age three, and progressed from a small stage to a hit TV show, Disney XD's Kickin 'It. But even today she gets very nervous before each show. She overcame her nervousness by staying positive. “I end up just keeping my head up and seeing where it takes me and usually, it takes me to a good place where I'm not so nervous,” Olivia said.

    Olivia grew up in Mississippi but moved to Los Angeles recently to pursue her career. “It was a big transition for me because I grew up in a small town,” Olivia said. But now, she's living her dream as an actress. When asked about advice for other aspiring actors, the young performer said, “Just stay positive and stay confident. If you know that you're powerful enough to conquer your fears and stay happy, that will lead you in the right way.”

    Olivia regularly stars on a Disney XD show called Kickin'It. She plays the fearless black belt Kim. “I think she is such an incredible girl and I look up to her.” Olivia said about her character, “She is so powerful and confident.”

同类题5

【wjx】 阅读文段,回答问题。

吃苦是一种资本

    ①吃苦,是一种资本。假如你没有吃过苦,你 就不具备这种资本。

    ②只是在影片里见过那位被击倒的拳击手,他躺在地上喘着粗气,浑身伤痕累累,嘴角还淌着血,却没有一个人给他送花,给他鼓掌;只是在旅途中看过赤脚的纤夫,喊着震天动地的号子,弯腰垂首将沉重的纤夫绳深深地勒进肩膀……

    ③你充其量是个旁观者。

    ④没有经历饥饿的历史,你便不知道一粒米的可贵,不知道那些被太阳晒黑了皮肤的耕耘者的可敬,当然,更无从感受饿得头昏眼花的可悲和伸手乞讨的可怜。

    ⑤没有尝过寄人篱下的滋味,听不到风凉话,看不到冷脸,你便无法塑造坚强的性格。突然某一天,你背靠的大树倒了,你开始失宠,在坑坑洼洼的路上,你绝对不如别人那样行走自如。

    ⑥苦,可以折磨人,也可以锻炼人。蜜,可以养人,也可以害人。

    ⑦_______________________________________________________。

    ⑧某报一篇专稿报道,武汉市一年仅19岁的姑娘何伶俐,因“考后感到一点信心也没有”,虽考分超过高校录取线7分,却在成绩单发下的前一天悬架自尽。她是船长的女儿,父母的心肝宝贝,从小泡在蜜罐里长大。蜜喝多了,竞会这般脆弱。

    ⑨聪明的日本人,在高度发达的物质文明下已经洞察了这种病变。据说,为了让大和民族的后代继承父辈创业的秉性,不少学校特地设立劳动场所,让孩子们使用锉刀、榔头,目的是学会吃苦。

    ⑩相比之下,我们这一代未免过于娇嫩了,还是狠狠心把自己推到大自然和社会中去吧。在成长的季节,吃苦经历是你成长的养分。以后你就知道这种养分让你终身受益。