坛状花冠
参考答案：
花冠筒膨大成卵形或成球形，上部收缩成一短颈，短小的花冠裂片向四周辐射伸展，如越桔。
Due to the policy of free highway fees on major holidays, too many passenger cars are trapped on the highways, causing heavy traffic jams, some even _________ for several hours.
A．held up
B．broken up
C．taken up
D．given up
推镜头总可以分为（）、推进和（）三个部分。
