短语按照构成要素是否凝固来分,可以分为()和()。
参考答案:固定短语;临时短语
He didn't _______ a nice weekend. [ ]
A. has
B. had
C. have
D. having
湖相油层,在标准层的控制下,按照沉积旋回的级次及厚度比例关系,从大到小()对比,为油层组、砂岩组、小层界线。
A、逐个
B、逐层
C、逐渐
D、逐级