陕西气候南北差异大，汉江谷地暖温带半湿润气候区。（）

·Look at the questions for this part.
·You will hear a passage about "American Weighs In ". You will listen to it twice.
·For questions 24-30, indicate which of the alternatives A, B, or C is the most appropriate response.
·Mark one letter A, B, or C on the Answer Sheet.

American foods are ______.

A．insufficient and expensive

B．many and various

C．neither delicious nor healthful