Question 1
正确答案: B
Question 2
正确答案: C
Question 3
正确答案: B
Question 4
正确答案: A
Question 5
正确答案: A
Question 6
正确答案: lightweight
Question 7
正确答案: bronze
Question 8
正确答案: levels
Question 9
正确答案: hull
Question 10
正确答案: triangular
Question 11
正确答案: music
Question 12
正确答案: grain
Question 13
正确答案: towboats