we should not worry about the transition of the Earth’s magnetic field
the Earth’s magnetic field will not change for at least 2000 years
the Earth’s magnetic field has decreased its strength rapidly
the transition of the Earth’s magnetic field can be controlled by modern science
第1题:
According to the passage, ______ has become the driving force for the development of telephone system?
A.information technologies
B.Internet
C.PC
D.convergence of telecommunications technologies
第2题:
According to the passage,quicksand is usually found______.
A. on hillsides
B. far inland
C. near water
D. on prairies
第3题:
A、according to
B、due to
C、Based to
D、In light of
第4题:
simple
easy
difficult
interesting
第5题:
第6题:
According to the passage, the first settlers used wood for their utensils and tools because it was ______.
A.durable
B.inexpensive
C.available
D.attractive
第7题:
According to the passage,a high IQ is______.
A. instinctual
B. painstakingly learnt
C. inborn
D. more trivial than people sense
第8题:
According to the passage, what is the most important job for a perfect mom?
________________________________________________________
第9题:
第10题:
demanding
practical
stubborn
liberal