骨盆骨折最常见和最严重的并发症为
A．直接缝合皮肤B．凡士林纱布覆盖包扎C．中厚游离皮片移植D．邻指带蒂皮瓣E．腹股沟轴型皮瓣
参考答案：A
Every student as well as teachers who ______ to visit the museum ______ asked to be at the school gate on time.
A．is; is
B．are; are
C．is; are
D．are; is
氢气球放开后会升上天空，所以空中飞行的气球不受重力。[ ]
