A-A+
The passage describes the magnetosphere as a b
问题详情
The passage describes the magnetosphere as a barrier because ______.
A．it is strongest in the polar regions and the magnetic lines bunch together
B．it increases the speed of the particles from the solar wind
C．it prevents particles from the solar wind from easily entering the Earth"s atmosphere
D．its position makes it difficult to be observed from the Earth此题为多项选择题。请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：C
解析：第2段，作者在阐述magnetosphere对太阳风的作用时指出它是一个障碍。由于“itforcesthechargedparticlesofthesolarwindtoflowaroundthemagnetosphereitself”(让太阳风粒子悬浮在磁力层，而不能进入大气层)，故选项C正确。
