A. Map-making skills
B. Mechanical motors
C. The spherical globe
D. More efficient ships
15. Which one of the following statements is true regarding paragraphs?
(A. A topic sentence should not be placed in the middle of a paragraph.
)
B. A paragraph with two main topics is called a complex paragraph.
C. A paragraph should have one main topic.
D. The topic of a paragraph is always placed in the first sentence.