合成树脂胶又分为（）等。
A、酚醛树脂胶
B、尿醛树脂胶
C、聚醋酸乙烯树脂胶
D、乙烯树脂胶
参考答案：A, B, C, D
— It _____ Yang Liwei about 21 hours _____ around the earth 14 times in the spaceship.
— How great he is! [ ]
A. spent, moving
B. took, traveling
C. took, to move
D. spent, to travel
PowerPoint2000中的超链接有“单击鼠标”和“鼠标移过”两种形式实现。
