托福词汇辅导：托福关键词汇(27)

　　1. Tryouts for community orchestras are frequently judged by committees.
　　[A] Advertisements [B] Auditions [C] Performances [D] Novelties

　　2. Triggered by the decreased light the flower bud of the water lily opens at sunset.
　　[A] Alleviated [B] Endured [C] Set off [D] Covered up

　　3. Sophisticated graphics programs provide chemists with beautiful three-dimensional simulations of molecules, producing images they can instantly shrink, expand and swivel.
　　[A] swing around [B] change [C] manipulate [D] level

　　4. The elliptical galaxies have a symmetrical elliptical or spheroidal shape with no obvious structure.
　　[A] proportionally balanced [B] commonly seen [C] typically large [D] steadily growing

　　Keys: BCAA