单项选择题
A．are not found; large parts of the land is covered with snow B．are not found; it is at the northern top of America C．are found ; it is on the Pacific "ring of fire" D．are found; there are so many islands
A．Earning Money B．Students’ Life C．Little Business D．Kids’ Cafe
A．Six Stages for Repairing Sam’s Bicycle. B．Possible Steps of Problem-solving. C．Necessities of Problem Analysis. D．Importance of Analyzing a Problem