东南亚的主要粮食作物是______，泰国、______、______是世界上重要的稻米出口国。
水稻；越南；缅甸
撒哈拉以南非洲面积最大的自然景观是[ ]
A．热带沙漠
B．热带草原
C．热带雨林
D．温带草原
If you want to talk to your teacher,you should _____ first.[ ]
A. called to her
B. called up her
C. call her up
D. called her up
