他说得太快,不能清楚地表达自己的想法. .
At my first art show,a famous professor praised me and (鼓励)me to keep trying and make more wonderful pictures.
The (人口)of China may increase fast because of the second﹣child policy(政策).
Tu Youyou won China's first Nobel Prize in Medicine in (十月),2015.
大自然如此重要以至于我们都在合理保护它.
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你能猜猜我叔叔买这个机器人多久了?