题干

改变摆锤重量的实验:

把细绳固定在挂钩上,下端挂一摆锤,让摆小幅度自由摆动,观察摆在15秒内摆动的次数。

15秒内摆动的次数

原来重量

两倍重量

三倍重量

第一次

13

13

13

第二次

13

13

13

第三次

13

13

13

比较观察结果,我们发现____

上一题 下一题 0.0难度 选择题 更新时间:2017-08-07 02:23:49

答案(点此获取答案解析)

摆的快慢与摆锤的重量无关

同类题5

阅读理解

    Hollywood's only Chinese-American superhero has stirred up heated debate on social media after she spoke out against discrimination in American show business.

    Chloe Bennet, a Chinese-American actress who stars in Marvel's trending TV series Agents of S.H.I.E.L.D., explained on social media why she changed her last name from Wong to Bennet, arguing that Hollywood is “racist” and wouldn't cast her with a last name that made them “uncomfortable.”

    “Changing my last name doesn't change the fact that my BLOOD is half Chinese, that I lived in China, speak Mandarin, or that I was culturally raised both American and Chinese,” replied Bennet.

    Bennet's remarks come after Ed Skrein stepped down from his role as Major Ben Daimion in the upcoming Hellboy movie for fear that his participation would be “whitewashing” a character of Asian descent(后裔).

    Racial barriers have been an essential problem in Hollywood. According to research conducted by the University of Southern California in 2015, nearly three-quarters of all characters in the top 100 films of 2014 were white, while only 5.3 percent of Asian artists can share the same privilege. In another report released in 2017, only 3.4 percent of over 1,000 surveyed films had an Asian director.

    “Asian artists can hardly stand out in Hollywood. Most roles starred by Asians are fixed and stereotyped, as if all Asians are good at math and martial arts. There is an invisible discrimination lurking(潜伏) in show business, as the difference of your skin color may bring disparity in your income and opportunities,” said Alex She, a New York-based Chinese-American photographer and movie maker.

    Bennet's experience has led to heated debate on both Chinese and foreign social media.