美术教材有广义与狭义之分，狭义的美术教材是指（）。
A、一切用于美术教学的材料
B、美术教科书或美术课本
C、教学参考书
参考答案：B
Pressed from his parents, and _____ that he has wasted too much time, the boy is determined to stop playing video games.
A．realizing
B．realized
C．to realize
D．being realized
鉴定骨折线是近期损伤或为陈旧性损伤的最灵敏、简便的方法是()
A．ECT
B．MRI
C．XCT
D．X线
E．以上都不是
