【B20】
A. at
B. on
C. of
D. to
The cause of the transition of the Earth's magnetic field comes from ___.
A. the movement deep inside the Earth
B. the periodically reverses of the Earth
C. the force coming from outer space
D. the mechanical movement of the Earth
我国政府在美国市场上发行的日元债券称为武士债券。 ()
A. 正确
B. 错误
How does Nadia want her coffee？
A. sweet and black
B. with milk
C. black with no sugar
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