考博考试

【单选题】 Students or teachers can participate in excursions to lovely beaches around the island at regular
A．gaps
B．rate
C．length
D．intervals

网考网参考答案：D
网考网解析：
at intervals每隔一段时间，每隔一段距离，如；She brought us coffee at intervals．gap空隙，缺口；间隔，差距；空档，空白，如：The trade gap between imports and exports remained high．rate速度；率；价钱，收费，如：She can read at the rate of 1000 words a minute．length长，任度。句意：学生或老师每隔一段时间就能参加去海岛周围的美丽海岸旅行的活动。 查看试题解析出处>>