3.Scottish Brochs were just homes of leaders and wealthy people.
听力: the professor in the lecture refutes all these theories.
1.Scottish Brochs would fail to defend enemies attack, since there were no small windows;
2.Water tanks and fire places were also found in Scottish Brochs, which supported that Scottish Brochs cannot serve the purpose as barns;
3.The location of Scottish Brochs means that they were not homes of leaders.
4.阅读:There are several benefits of commercial fishing of lionfish.
1.It is beneficial to ecosystem, such as for corals;
2.Lionfish would be new type on fishing market, which would balance the market;
3. Lionfish is full of nutrients which have dietary benefits.
听力:不赞同
1.Commercial fishing of lionfish will jeopardize local ecosystem;
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