1.据报道说这个城市每年约有100人死于心脏病和肺癌
2.我没提及那件事,因为我害怕他心烦意乱。(be afraid of)和upset
3.我们确信此计划将对医学的发展产生重大影响(have.. effect on)和development
參考答案:1. It is reported that about 100 people die of heart disease or cancer in this city
2. I'm afraid of his being upset, so I didn't mention that matter.
3. We are convinced that the plan will have a great effect on the medical development.