田间试验设计方法最常用的有哪几种？
参考答案：
可以为顺序排列（包括对比法、间比法），随机区组设计两种。
—What are you doing for your vacation?
—________________________.
A．I’m going hiking.
B．I went to the beach.
C．I often go to the mountain.
D．I like going bike riding.
头痛如裹，昏胀沉重者，多因
A．风寒所致B．瘀血所致C．风湿所致D．风热所致
