填空题 Directions: Using the information in the text, complete each sentence 6-10, with a word or phrase from the list below. For each sentence(6-10), mark one letter(A-G)on your Answer Sheet. Do not mark any letter twice. A. the icebergs could move without using ships and fuel B. its speed could reach over 4 knots C. the cost is too huge D. earnings will prove to well exceed its operation cost E. water can be piped only at the top F. it will mark a new era in exploring the Antarctic Ocean G. the top of the iceberg melts first

填空题 The plan mentioned in paragraph 1 is impracticable because 1.

填空题 The self-propelled icebergs will reduce the cost greatly because 1.

填空题 When the iceberg travels in a favorable current, 1.

填空题 The plastic cocoon enables the fresh water to be piped off the top as the iceberg melts because 1.

填空题 The iceberg-removing plan will turn out to be worthy the effort in that 1.