【题目】阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
The 【1】(popular) of Chinese-owned video sharing service TikTok continues to grow among young people in the United States. In 2019, experts say the service doubled 【2】(it) American user base to 37 million. TikTok is 【3】(particular) popular among teens and young adults.
The service lets users create and share short videos, many of 【4】 are under 15 seconds. The TikTok app offers a 【5】(wide) choice of sounds, brief parts of songs and special effects tools than traditional video-sharing apps 【6】(help) create better videos. Videos often include popular songs from well-known artists and TikTok has even helped launch the careers of new music stars.
Successful video-sharing apps Snapchat and Instagram also mainly interest young users with a wide mix of photos and videos 【7】(center) largely on fashion, pop culture and humor. But TikTok is taking up a remarkable market share now. 【8】, it is considered a strong competitor to both of them.
Last year, TikTok was 【9】 second-most downloaded app from Apple and Google stores, only less than WhatsApp. Research company Sensor Tower estimates that people 【10】(download) the TikTok app 1.65 billion times so far.
【答案】
【1】popularity
【2】its
【3】particularly
【4】which
【5】wider
【6】to help
【7】centered
【8】Therefore/Thus/Hence
【9】the
【10】have downloaded
【解析】
本文是一篇新闻报道。本文主要讲了抖音在美国大获成功，倍受年轻人青睐。
【1】考查名词。句意：来自中国的视频分享服务软件TikTok（抖音）在美国年轻人中越来越受欢迎。该空作句子主语，要填一个名词，故填popularity。
【2】考查形容词物主代词。句意：专家称，2019年它（即抖音）的美国用户数量翻了一番，达到3700万。根据句意，这里要表达的是“它的美国用户数量”，故填its。
【3】考查副词。修饰形容词popular，要用副词，故填particularly。
【4】考查定语从句。分析可知 many of ___4___ are under 15 second 是一个非限定性定语从句，先行词为 short videos，指物，关系词在句中作介词of的宾语，要用which引导这个定语从句。故填which。
【5】考查形容词的比较级。句意：比起传统的视频分享应用程序，抖音提供了更广泛的声音选择、简短的歌曲片段和特殊效果工具，以帮助用户创造更好的视频。结合句意以及后面的than，可知这里要用所给形容词的比较级。故填wider。
【6】考查不定式作目的状语。抖音软件“offers a wider choice of sounds, brief parts of songs and special effects tools ”的目的就是为了帮助用户创造更好的视频，此处要用不定式表目的，故填to help。
【7】考查过去分词作后置定语。分析可知interest在句中作充当谓语，center在句中为非谓语，作a wide mix of photos and videos的后置定语，与逻辑主语a wide mix of photos and videos之间是逻辑上的动宾关系，要用其过去分词形式，故填centered。
【8】考查副词。分析可知空格处要填一个副词连接前后文。根据前文“But TikTok is taking up a remarkable market share now.”可知抖音正在占据很大的市场份额。根据后文“it is considered a strong competitor to both of them.”可知Snapchat 和 Instagram都把抖音当成强劲的竞争对手。前后文是因果关系，副词thus, therefore以及hence都有“因此”之意，故填Therefore/Thus/Hence。
【9】考查定冠词。app由形容词最高级修饰，最高级前面要加the。故填the。
【10】考查现在完成时。所给词download在宾语从句中作谓语，根据时间状语so far，可知从句中要用现在完成时。主语people为复数，与谓语动词download之间是主动关系。故填have downloaded。
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