1·Nine thousand years ago, the maize cob was very hard, and eating it raw would have made you very ill.
九千年前，玉米芯是很硬的，生吃的话你会病得很惨。
2·You can find lots of scenery---Dragon Waterfall, Cool Valley, Hanging Stone, Cliff Pictures, Maize Cob Peak, White Snake Cave, etc.
有很多景色宜人之处——如神龙瀑布、清凉谷、天然石壁图、悬空石、玉米峰和白蛇洞等。
3·The maize plants cannot produce a healthy cob.
玉米也无法结出较好的棒子。