B．how to design a needle which would not break

　　C．where to put the needle

　　D．how to stop the thread from getting caught around the needle

　　答案：D　细节理解题。根据第一段第二句中的"but he had run into a very difficult problem: It seemed impossible to get the thread to run around the needle"及第二段中的"Howe ran into the same problem as before. The thread kept getting caught around the needle."可知，豪面临的问题是如何避免线缠绕到针上，所以答案是D。

　　6．Thomas Edison is spoken of because ________ .

　　A．he also tried to invent a sewing machine

　　B．he got some of his ideas from dreams

　　C．he was one of Howe's best friends

　　D．he also had difficulty in falling asleep

　　答案：B　细节理解题。根据第三段前两句"Elias Howe was not the only one in finding the answer to his problem in this way. Thomas Edison, the inventor of the electric light, said his best ideas came into him in dreams."可知，豪并不是唯一一个通过此方法找到答案的人，爱迪生也是在梦中得到问题的答案的，所以答案是B。

　　7．Dreams are sometimes called "secret messages to us" because ________ .

　　A．strange images are used to communicate ideas

　　B．images which have no meaning are used

　　C．we can never understand the real meaning

　　D．only specially trained people can understand them

答案：A　细节理解题。根据最后一段中的"this part of the brain can send messages to the part you use when you are awake. However, the