A.physics
B.recycle
C.bye
D.hydrogen

A. The city nearby offered all kinds of fun.
B. The area produced the finest wine in Italy.
C. Few people expected the volcano to erupt again.
D. The mountain was beautiful and covered with grass.

A. Athletic and recreational.
B. Food and transportation.
C. Bookstore and post office.
D. Medical and audio-visual (视听的).