1.   An explanation of photosynthesis that most museum visitors will be able to understand.

2.   And it was smart to pick a body of work that most museum visitors will not find intimidating.

3.   Behind his graying beard, Friedman exudes boyish delight as he explains to museum visitors how things work and imagines new ways to depict scientific subtleties to nonscientists.

4.   All of this is out of view of museum visitors.

5.   But for the museum visitor, only two really stick in the mind, either because of the cleverness or the promise of the ideas involved.

6.   But for museum visitors, sometimes there is slightly less to see.

7.   But most museum visitors come on weekends.

8.   But like other museum visitors, Republican and Democrat, Creamer said the impasse had gone on too long to focus blame at only one end of Pennsylvania Avenue.

9.   For museum visitors used to seeing objects and asking questions about them, astrophysics poses a problem.

10.   It is the touched-up Stalin that the handful of museum visitors one day last week traveled miles to see.