The Earth is quite safe with a magnetic field surrounding it-最需题库

1The Sun’s gravity is too weak to keep its plasma from flowing to the Earth.
A.Right
B.Wrong
C.Not mentioned
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2Norman Blarney is an artist of deep convictions.
A.statements
B.beliefs
C.suggestions
D.claims
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3In thelatter case the outcome can be serious indeed.
A.result
B.judgment
C.decision
D.event
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4Even in a highly modernized country, manual work is still needed.
A.physical
B.mental
C.natural
D.hard
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5Can you follow the plot、
A.change
B.investigate
C.write
D.understand
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6Some scientists are worrying about the possible disappearance of the Earth’s protective magnetic field in the future.
A.Right
B.Wrong
C.Not mentioned
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7The auroras are formed when the electrons falling into the Earth’s atmosphere at the poles and colliding with gas molecules in the atmosphere.
A.Right
B.Wrong
C.Not mentioned
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8You cannot sec the Northern Lights unless you are in Alaska or Canad
A.A.Right
B.Wrong
C.Not mentioned
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9Tens of thousands of tourists take special trips to Norway and Sweden every year to watch the Northern Lights.
A.Right
B.Wrong
C.Not mentioned
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10An aurora is generally close to the ground and is very long and thick.
A.Right
B.Wrong
C.Not mentioned
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The Earth is quite safe with a magnetic field surrounding it to protect it from the attack by the solar wind.