76. The examination report indicates(表明) that there was something wrong with his stomach.

75. The president spoke for only five minutes.　 His speech was brief(简洁的) but encouraging.

74. You should exchange(交换) your ideas with each other from time to time so that you can better understand each other.

73. The boy looked at the bread maker curiously(好奇地), wondering how the machine changed the flour into dough.

72. It’s dangerous to drive on the foggy(多雾的) day, when there is heavy fog all around you to prevent you judging correctly and timely.

71. I have a large family to support, so I can definitely not to afford(支付得起) to offend my boss.