【单选题】What is the 'big bang' theory of cetacean predation? ______.
A.
Sixty-eight species of odontocetes use sound to locate their victims
B.
Toothed whales use sound as weapons
C.
Whales and humans have vestigial structures
D.
Whale teeth, once sharp, have become somewhat short and uneven
【多选题】植物细胞培养容器中的气体成分主要指( )。
【简答题】如果我们把所有精力和努力都投入进去,再过几个月,我们肯定能完成这个项目。(accomplish)
【单选题】Like the theory of evolution, the big-bang model of the universe's formation has undergone modification and ______, but it has______ all serious challenges.
A.
alteration...confirmed
C.
transformation...ignored
D.
evaluation...acknowledged
E.
refutation...misdirected