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Source: Bureau of Labor Statistics, Current Population Survey.
可适当增加长句和复杂句的使用；文章结构不错，使用了丰富的衔接词和过渡词；作者能较灵活准确地使用词汇表达，更能较熟练地使用一定的学术词汇。
Security issue may sound clichéd, but when it comes to the campus security, we have to take it seriously. Nearly every day, there are reports to the security office on campus that valuable things are stolen away. A surrounding with stealing and mugging can’t be worse for studying. In such cases, what measures should be taken to improve the campus security? On one hand, we students should strengthen our security awareness. Once we smell out something unusual, we should report it to the campus guard immediately. On the other hand, more equipment such as monitors should be installed on campus so as to detect crimes as soon as possible. Besides, a proper amount of security guards should be arranged to patrol the campus. In my opinion, campus security will be improved as long as efforts are made on campus. Therefore, colleges and universities should try their best to make everyone on campus safe and heaith.
