A. patient and optimistic B. impatient and pessimistic C. impatient but optimistic D. indifferent but impatient 参考答案:C 答案解析:观点态度题。从信的最后几句话可以看出作者有些不耐烦,但是对治好自己的病还是有信心的。
第31题: [单项选择]A. Farmers relied less on imports. B. Farmers became more dependent on bank loans. C. The costs for shipping farm products by train increased. D. Prices for farm products went up. 参考答案:B 答案解析:[听力原文] What was one result of the increased use of machinery on farmers in the US