慧星
参考答案：
呈现云雾状的独特外貌、以扁长椭圆轨道绕太阳运行的质量较小的天体。
Under the environment of fierce competition, the only way John could imagine ________ stress was to get tougher by making greater efforts.
A．handling
B．to handle
C．handled
D．having handled
肌肉注射时，水溶性药物经
A．毛细血管内皮吸收B．毛细血管吸收C．靶向吸收D．淋巴吸收E．毛细血管壁上的细孔进入血管吸收
