从1946年6月至从1947年3月，在中央的正确指挥下，解放区军民仅用8个月的时间胜利粉碎了国民党军队的重点进攻。
参考答案：错
In 1948, three American scientists invented ____ transistor, which is ____ small electronic device to control an electric current.
A．the; a
B．a; a
C．the; the
D．a; the
The advocates—mainly family therapy doctors—are applying a new approach to everything from marriage conflict to psychosis.
A．margin
B．marine
C．marital
D．martial
