异烟肼可与________反应,产生黄色结晶,其熔点为228~231℃。
A.硝酸银
B.溴化氰
C.香草醛
D.硫酸铜
E.碘化铋钾
参考答案:C
This is a picture of our classroom (教室). The walls(墙) are white. A blackboard(黑板) is on the wall. Two doors (门) are in the wall. Six brooms (扫帚) and a baseball are behind (在……后面) the door. Fifty desks and chairs are in our classroom. They are our desks and chairs. Three plants are green. We like(喜欢) our classroom. 26 boys and 24 girls are in my class. We are all friends.
小题1:This is a picture of ________.
A. our classroom B. our room C. our school
小题2:________ is on the wall.
A. A blackboard B. A baseball C. Two doors
小题3:_________ are behind the door.
A. Six brooms and baseballs. B. The desks and chairs C. A baseball and six brooms.
小题4:What are green?
A. The doors B. The plants C. The walls
小题5:“Fifty desks and chairs are in our classroom.”
The number:fifty = _________
A. 26 B. 24 C. 50
财务报表的分析方法有因素分析法和比较分析法两大类,其中因素分析法是最基本的分析法。()