Tom: Hi, Cathy. 小题1: 

Cathy: I have to finish my project on the history of the Internet. What about you?

Tom: 　 小题2:　If it’s fine, we’ll go camping. Would you like to join us?

Cathy: I’d like to, but the deadline for my project is next Monday.

Tom: What a pity! 小题3: 

Cathy: Yes, please. Can you suggest any good reference books?

Tom: You may want to read Origins of the Internet and The Digital Future.

Cathy: I’m reading the two books. 　 小题4: 

Tom: Go to the Science Museum website, and you’ll find lots of up-to-date information.

Cathy: Good idea. Thanks for your help.

Tom: 　 小题5: 

A．Never mind.

B．Don’t mention it.

C．Any other suggestions?

D．Will you come next time?E. It depends on the weather.

F. Anything I can do for you?

G. What are you up to this weekend?

起动机一定有励磁绕组且与电枢绕组呈完全串联。