单项选择题

A．The advantages of traditional surveying methods.
B．Using satellites to communicate with mountain climbers.
C．Obtaining new information about a mountain.
D．Controlling satellites from the top of a mountain.
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单项选择题
A．wantB．selectC．hateD．tend
A．want
B．select
C．hate
D．tend
单项选择题
A．Examine whether these children were healthy.B．Find out whether their mothers had smoked.C．Find why these children suffered breathing problems and lung disease.D．Look into the effect that mother’s smoking had on their children.
A．Examine whether these children were healthy.
B．Find out whether their mothers had smoked.
C．Find why these children suffered breathing problems and lung disease.
D．Look into the effect that mother’s smoking had on their children.
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