Whats the conversation mainly about？A．The various kinds of resources.B．The measures agains

Whats the conversation mainly about？A．A more economical diesel fuel.B．Characteristics of a

Whats the passage mainly about？A．Iran tightens the security.B．Mysterious killings in Iran.

Whats the bad news mentioned in the conversation？A．Jessica"s leg has to be removed soon.B．

Whats the main idea of the news item？A．The launching of the space shuttle Discovery has be

Whats the passage mainly talking about？A．Overweight kids and parents in the Unite States.B

According to the conversation, the main benefit of the overhead projector is thatA．it prod