赞题库-背景图
单项选择题

A．Recognize and define the problem.
B．Look for information to make the problem clearer.
C．Have suggestions for a possible solution.
D．Find a solution by trial or mistake.
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热门试题

单项选择题A．A cake tin.B．A microwave oven.C．A rolling pin.D．Flour.

A．A cake tin.
B．A microwave oven.
C．A rolling pin.
D．Flour.

单项选择题A．To check the accuracy of scales.B．To calculate the density of other metals.C．To observe changes in the atmosphere.D．To measure amounts of rainfall.

A．To check the accuracy of scales.
B．To calculate the density of other metals.
C．To observe changes in the atmosphere.
D．To measure amounts of rainfall.