问题
单项选择题
11,12,12,18,13,28,( ),42,15,( )
A.15,55
B.14,60
C.14,55
D.15,60
答案
参考答案:B
解析: 间隔组合数列。
奇数项:11、12、13、(14)、15,为连续自然数
[*]
11,12,12,18,13,28,( ),42,15,( )
A.15,55
B.14,60
C.14,55
D.15,60
参考答案:B
解析: 间隔组合数列。
奇数项:11、12、13、(14)、15,为连续自然数
[*]
Passage Two
What is the size of Larsen B ice shelf before it disintegrated in the 1900s a. It covered more than 2,000 square kilemeters, and was 300 meters thick. b. It covered more than 3,000 square kilemeters, and was 100 meters thick. c. It covered more than 3,000 square kilemeters, and was 200 meters thick. d. It covered more than 2,000 square kilemeters, and was 100 meters thick,