翻开美国历史,包括克林顿在内,共有九位美国总统曾在美国众议院被提案弹劾。其中包括泰勒、强森、克里夫兰、胡佛、、杜鲁门、尼克松、里根、老布什和克林顿,民主党和共和党领袖都未能幸免。它体现出了美国政体的哪一重要原则( ) A.中央集权 B.分权制衡 C.两党制 D.邦联制Energy drinks are not allowed _____ in Australia but are brought in from New Zealand. A. to make B. to be made C. to have been made D. to be making