如果数a的绝对值等于a,那么a一定是正数。[ ]
错误
下列农业发展符合因地制宜原则的是[ ]
A.新疆大力发展种植业
B.东北平原大力发展水稻种植业
C.长江中下游地区发展淡水养殖
D.欧洲西部农业以粮食生产为主
The tour guide has made the route for the school trip. We don't need to ______ that. [ ]
A. be worried about
B. be afraid of
C. be sorry for