【单选题】True, 10__________________________ but it's vital we find the rational ways of fishing before every ocean becomes a dead sea.
A.
some countries are beginning to deal with this problem
B.
some countries are beginning to deal with these problems
【单选题】一般认为与果蔬质构直接有关的酶是( )。
【单选题】从小说中的描述来看,元春的特长是( )。
【简答题】A.logical B.sensational C.emotional D.rational
【单选题】在化学实验中,必须遵守实验规则。下列做法违背实验规则的是 [ ]