A:a,go to hospital
B:不填,go to hospital
C:不填,go to the hospital
D:a, go to the hospital
阅读1925—1945年美国失业率变化情况示意图。1929—1933年失业率急剧上升的主要原因是( )
下列属于后天学习行为的是( )
After getting lost in a storm, a member of the navy team ______ four days later.