【单选题】The author writes the passage to
A.
analyze the origin of morality.
B.
make comments on two books.
C.
explore some animal behaviors.
D.
present some intriguing findings.
【多选题】以下是维持蛋白质胶体稳定的两个主要因素是()
【单选题】水蒸汽热力过程热力学能变化量△ u =()
【单选题】春节是我国最重要的一个节日,下列习俗不属于春节习俗的是()。
【单选题】Who is the author of Records of Music which was a great music theoretician?
【单选题】As to the views from the Democrats and Republicans, the author______.
A.
is supportive of both sides
B.
takes an detached attitude
C.
favors Democrats' views
D.
favors the Republicans' view