【判断题】变温动物因白天吸收太阳能,因而白天的体温比晚上的体温高。
【判断题】酸价测定意义:反映油脂酸败的主要指标,此指标可以评定油脂品质的好坏及贮藏方法是否恰当。
【单选题】Which of the following means '还盘'?
【单选题】Which of the following kinds of Rocking ham ware were probably produced in the greatest quantity?
【单选题】Which of the following statements would the writer agree with the most?
A.
The nature and quality of subjects are more important than marks on them.
B.
Teachers should force students to learn to read and write and calculate well.
C.
Good preparation for standard tests is necessary for students.
D.
Most students are clear about how to acquire basic skills.
【单选题】造成贫血的原因有很多,儿童时期最为常见的贫血原因是( )。