Complex sentence: Sorvino excelled in high school, and was accepted into Harvard University, and studied for one year as an exchange student with CIEE in Beijing, China, where she became fluent in Mandarin Chinese.
Split into simpler sentences: Sorvino excelled in high school, and was accepted into Harvard University. She studied for one year as an exchange student with CIEE in Beijing, China, where she became fluent in Mandarin Chinese.