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After a cold front passes，the barometric pressure______．
A.drops，and the temperature drops
B.drops ， and the temperature rises
C.rises，and the temperature drops
D.rises，and the temperature rises
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单选题Which of the following statements concerning frontal movements is TRUE（）.A
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单选题After a cold front passes the barometric pressure usually（）.A
fluctuatesB
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单选题After the passage of a cold front the visibility（）.A
does not changeB
improves rapidlyC
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单选题After a cold front passes，the barometric pressure（）.A
drops，and the temperature dropsB
drops，and the temperature risesC
rises，and the temperature dropsD
rises，and the temperature rises
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