【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.
【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()。
【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】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