16. The author suggests that astronomers consider the study of cosmic jets to be (A) an obsolete scientific field (B) an unprofitable venture (C) an intriguing challenge (D) a subjective debate

20. What is the main idea of the passage? (A) There was great demand for the work of eighteenth-century artisans. (B) Skilled sculptors did not exist in the United States in the 1770's. (C) Many foreign sculptors worked in the United States after 1776. (D) American sculptors were hampered by a lack of tools and materials.

16. The author suggests that astronomers consider the study of cosmic jets to be (A) an obsolete scientific field (B) an unprofitable venture (C) an intriguing challenge (D) a subjective debate

其他試題

16. The author suggests that astronomers consider the study of cosmic jets to be
(A) an obsolete scientific field
(B) an unprofitable venture
(C) an intriguing challenge
(D) a subjective debate