L4
讲座
1. What does the professor mainly discuss
The effects of agriculture on early human societies
The benefits of domesticating wheat plants
Evidence about the earliest domestication of plants
Archaeological evidence about where wild wheat was first cultivated
2. Why does the professor describe some characteristics of wild wheat plants
To show one reason why humans began to domesticate plants
To illustrate how ancient people made flour
To explain why the spikelets of wild wheat do not fall off the stalk
To show that wild plants are less nutritious than domesticated plants
3. Why does the professor mention a computer model that was based on cultivation experiments
To show the advantages of computer simulations for answering complex problems
To show the difficulties of determining the age of spikelets found at archaeological sites
To explain how the cultivation of crops can result in genetic changes
To explain the claim that the domestication of crops was a short process
4. According to the professor, what did the spikelet samples found at a site in Turkey reveal（多选题）
People were cultivating wheat during the last ice age.
Wild and domesticated wheat were grown together there.
The wheat was primarily gathered from the ground.
The transition to full domestication was slower than previously thought.
5. According to the professor, what are two possible explanations for the rise of agriculture（多选题）
The invention of tools for grinding seeds
The beginnings of a milder global climate
The fertility of the soil in two particular regions
The changing social behavior of hunter-gatherers
6. What does the professor imply when she says this:[暂无重听录音]
She wants to correct a statement she made earlier.
She wants the student to guess the correct answer.
The assumption is no longer considered correct.
The student needs to clarify his question.
