What aspect of butterfly development does the professor mainly discuss？
A. The way in which adults alter their lifecycle to reproduce.
B. Their similarity to other holometabolic creatures.
C. Their transformation from caterpillars into adult imagoes.
D. The four specific phases they experience as they grow.
Why does the man say this:
A. To imply that the professor is digressing onto another topic.
B. To request clarification of a term the professor used.
C. To indicate that the professor needs to speak up.
D. To express doubt about something the professor said.
英国兰开斯特家族的支持者是()。
A. 经济发达，政治上称霸一方的北方封建集团
B. 经济落后的南方封建主集团
C. 经济落后，政治上称霸一方的北方封建集团
D. 南方经济发达的封建主集团及力图建立强大王权的城市市民及绅士
从根本上说，我国新时期统一战线的的实质是（）
A. 人民民主性质
B. 爱国主义性质
C. 社会主义性质
D. 政治联盟性质
微信支付 
支付宝支付