【单选题】关于洋盆与海水的年龄,说法正确的是:
B.
太平洋可能是地球上最古老的大洋,其洋底最古老的沉积岩是1~ 2 亿年前的沉积层
【单选题】What does the professor decide to do?
A.
To allow the woman to repeat the exam.
B.
To reschedule the woman’s exam for another day.
C.
To let the woman skip the final exam.
D.
To give the woman a grade of incomplete.
【单选题】下列哪一种方法不能增加浸提浓度梯度( )
A.
不断搅拌 B.更换新鲜溶剂 C.连续逆流提取
D.
浓度差 B.扩散速率 C.扩散系数 D.扩散半径
【判断题】灵感不是主动想出来的,而是由潜意识进入意识产生的,因而它是无法控制的。
【单选题】听力原文:M: what do you think of the final exam ? W: I thought it would be easy, but at the end of the first hour, I was still on the first page. I hardly had time to get to the last page. What can we con...
A.
The exam was difficult for the woman.
B.
The woman finished the exam in one hour.
C.
The woman thought the exam easy.