A. Business management strategies. B. The use of computer. C. The life style of telecommuters. D. Extending the workplace by means of computers. 参考答案:D 答案解析:[试题分析] 主旨题。 [详细解答] 文章主要讨论了一种新的工作方式——使用电脑在家办公,因此D(通过电脑使工作空间扩大)是正确选项。
第15题: [单项选择]Questions 22 to 25 are based on the conversation you have just heard. A. He was born in Indonesia. B. He’s got a London accent. C. He came to London when he was 13. D. He was not born in London. 参考答案:D 答案解析:[听力原文] What can we know about the driver from the conversation
第27题: [单项选择]下述情况下使心排血量减少的是 A. 心率增加到100/min B. 心率减低至50/min C. 大动脉压力降低 D. 心室舒张末期血液充盈量增加 E. 心肌收缩力增加 参考答案:B 答案解析:心排血量是指一侧心室每分钟射出的血液量,=心率×每搏量。所以增力D心排血量的因素有:心率在一定范围内增加;心室舒张末期血液充盈量增大;心肌收缩力增加。减少心排血量的因素有:心室肌后负荷加大,射血阻力增