Alex sat quietly at the back of his Chinese class, his eyes fixed on the textbook before him. As a shy and unnoticed student, he felt like a lone wolf, struggling against the complexities of high school life. Ms Lau, his Chinese teacher, was a light in his otherwise dark world. Her warm smile and gentle behavior made her stand out among the sea of teachers. She was the only one who seemed to understand his conservative nature, always encouraging him to step out of his comfort zone. 

One day, after class, Ms Lau approached Alex with excitement shining in her eyes. "Alex, I have an offer for you," she said, her voice filled with enthusiasm. "I am organizing a cultural exchange program to China, and I believe it would be a great opportunity for you to explore a new world."

Alex's heart skipped a beat, the prospect of traveling to a foreign country both exciting and terrifying. He hesitated, unsure if he had the courage to start such an adventure. But Ms Lau's firm belief in him gave him the push he needed to take a leap of faith.

Under Ms Lau's guidance, Alex began preparing for the trip. He got really interested in Chinese culture and learned about its long history and traditions. Ms Lau became his mentor(导师), teaching him not only the language but also invaluable life lessons. She taught him the importance of being confident and not giving up, reminding him that growth only happens outside one's comfort zone.

The day of departure arrived, and Alex found himself on a plane headed for China. He couldn't help but feel amazed as he stepped off the plane and into a world so different from his own. The busy streets, bright colors, and unfamiliar sounds flooded his senses. Yet, Ms Lau's comforting presence by his side provided him with the strength to face the unknown.

注意：

1. 续写词数应为150词左右；

2. 请按如下格式在答题卡的相应位置作答。

During their time in China, Alex wholeheartedly enjoyed the experience. 

Back in the United States, Alex was a changed person.