A-A+
A．To carry information that would help determi
问题详情
A．To carry information that would help determine elevation.
B．To provide accurate weather reports.
C．To relay information from scientists around the world.
D．To indicate which route the mountain climbers should take.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：In the study described，how were satellite signals used?
细节题。解答此题的关键是把原文(contains important information that can be used to determine the longitude，latitude and elevation)进行概括(carry information that would help determine elevation)。
