The geomagnetic storm caused by this round of solar storm reaches its highest _11_ on the two poles of the earth, which affects electricity supply of the northern America. Overexposure to radiation threatens the health of passengers on planes flying _12_ the Polar Regions. If we fly in the sky during such a solar storm, it means we receive ten times the X-ray radiation. Its _13_ damaging.
Scientists say a solar eruption is like the sun sneezing, which will make the earth catch cold. Though this natural force is irresistible, scientists can _14_ detect its movement accurately by monitoring. Facing successive solar storms, humans cant drop their _15_.
1. A. refers to
B. depends on
C. prevents from
D. acts on
正确的答案是: A
2.A. among
B. above
C. along
D. aboard
正确的答案是: C
3.A. height
B. intensity
C. color
D. shape
正确的答案是: B
4.A. piece
B. portion
C. set
D. round
正确的答案是: D
5.A. sun
B. earth
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