1. 不知道health insurance 大概要交多少啊?

It depends on the health care plan you choose, and depends on whether you have family members. If single, you can choose some plans which you actually pay nothing.

2. 住宿费和消费高不高啊?

Economic housing: $400-500 studio/one-bed room; $340-380 onebedroom in a twobedroom apt.

3. 冬天是不是很冷很长啊. Unfortunately, yes.