【题目】We must remember the health and safety of our oceans is our individual responsibility, _______ that we can’t afford to ignore.
A. one B. that
C. what D. who
在线课程【答案】A
【解析】
考查定语从句。句意：我们必须记住，海洋的健康和安全是我们每个人的责任，我们不能忽视这一责任。that we can’t afford to ignore.是一个定语从句，空格上需要填一个先行词，故选A。