Other^(A) interesting^(B) aspect of tachistopic training in recent years has been^(C) the newfound use^(D) by professional teams.

Only about^(A) 3 percent of oil wells^(B) actually^(C) do^(D) a profit.

Dislike^(A) sumac with^(B) red berries, sumac with white berries is^(C) poisonous^(D).

Pittsburgh has reduced its^(A) smog by requiring more^(B) complete oxidation of fuel in cars, and others^(C) cities can do^(D) the same thing.

Alike^(A) all^(B) other^(C) mammals, dolphins have^(D) lungs.

Up to World War II almost all^(A) important research in physics had been made^(B) in universities, with only^(C) university funds for support^(D).

Because the plan that was made^(A) yesterday is no longer^(B) feasible, the manager had to^(C) choose another alternatives^(D).

Particles with unlike^(A) charges attract each other, while^(B) particles with alike^(C) charges repel each other^(D).

One another^(A) surprising^(B) method of forest conservation is^(C) controlled cutting^(D) of trees.