21.   Although the contrast between the two kinds of paint appears subtle to viewers, Mancusi-Ungaro concluded that it was crucial to understanding the dark pictures.

22.   Among the few kinds of business to do well so far on the World Wide Web, bookselling stands out.

23.   And about all the two kinds have in common is the method for making them.

24.   As it turned out, despite what I was told on the phone, all they had was the other kind.

25.   At the time, these were the only two kinds of microbes known.

26.   Being both a Huxtable and the other kind of black is a tricky psychological tightrope to walk.

27.   Botanists say that the many kinds of carnivorous plants evolved to get nutrients, especially nitrogen, that are lacking in the soil or water where they grow.

28.   A. I think you are confused about the two kinds of inflation-adjusted bonds the government now offers.

29.   A. The USDA conducts thousands of tests for the many kinds of contamination that are possible in meat and poultry processing.

30.   According to federal statistics, passenger-car drivers are cited far more often than truck drivers when the two kinds of vehicles are involved in fatal crashes.