植树工程中，（）的定点放线方法适用于范围大而地势平坦的绿地。
A、交会法
B、平板仪定点
C、网格法
D、断面法
参考答案：C
According to this passage, to learn a foreign language would require one to ______.
A．do more activities
B．learn about a new culture
C．meet more people
D．need more names
葡萄胎的恶变率是30%
