题目内容：

    Art galleries are places in which artists can display all types of works of art, including paintings, drawings, photographs, sculptures,etc. 1. At the same time, however, each artwork must be protected from exposure to too much light since that can cause works to fade and therefore get ruined. 2.

The most common form of lighting used to light up artwork is indoor spotlights on tracks attached to the ceiling near where the work is being displayed.3. It permits the lights to be moved more easily when the light patterns require adjusting. Recessed(嵌入的)lights in walls and ceilings can be useful so long as they are not fixed in place but can instead be easily moved to create ideal light patterns. Most art gallery directors state that a combination of tracked and recessed light equipment is ideal because the tracked lights focus directly on the artwork while the recessed lights are used on the nearby walls to provide a surrounding light source.4.

How to angle the lights depends upon the height of the ceiling and the size of the artwork. Caution must be taken to avoid creating too many areas with shadows or to have the lights cause a glare on the artwork. Besides, the lights should not be bare bulbs burning directly on the artwork but should be made in some way to make the lighting softer. According to experts, low voltage(电压)bulbs are the best to use when lighting artwork.5. Thus artwork should be placed in a room where sunlight can’t directly hit it.

A. It can make the displays attractive.

B. Using tracked lighting is beneficial.

C. Light plays a key role in art galleries.

D. This light source can better improve the mood surrounding the work.

E. To better improve their appearance, the display area needs to be well lit.

F. Finding a happy medium between not enough light and too much of it requires considerable skill and experience.

G. Above all, natural light should be avoided since direct sunlight will damage artwork, particularly paintings,over time.