II. 19. This rule can be used for all integers, both positive and negative. 27. Impedance in an ac circuit plays the same role that resistance does in a dc circuit. 28. Two parallel wires a distance of apart carry the current i
QUIZI There is a 1-in-17 chance of drawing two successive hearts in this manner. The varieties of nonferrous(有色的) metals are nearly four times what they were. There are races(种,属) between animals large and small. Leprosy does not affect most animals the way it does humans
1.Objectives of this lecture; 2.Definition of a sentence; 3.Types of sentences; 4.Sentence patterns; 5.Short and long sentences; 6.Loose and periodic sentences; 7.Ways to establish links between sentences; 8.Common sentence problems