The tropical cyclone at 15.8N,132.4E yesterday afternoon ______ into a tropical storm with max winds 70 knots near center.
A.upgraded
B.decreased
C.become
D.changed
正确答案是A
The tropical cyclone at 15.8N,132.4E yesterday afternoon ______ into a tropical storm with max winds 70 knots near center.
A.upgraded
B.decreased
C.become
D.changed
正确答案是A