41. The Ice age ended about ____ years ago.

A. 140
B. 1,400
C. 14,000
D. 140,000

42. The languages used in China is

A. Chinese, English
B. Chinese, Arabic
C. Chinese, French
D. Chinese, Korean

43. The islands with coral covered surfaces in the Bay of Bengal are

A. Andaman islands
B. Nicobar islands
C. both (a) and (b)
D. None of the above

44. Within the transporting medium, transport can occur by

A. suspension
B. solution and traction
C. solution
D. All of the above

45. The length of the day is determined in

A. astronomical units
B. solar terms
C. length of the hours
D. None of the above