A-A+
A．Staff who specialize in heating loss have be
问题详情
A．Staff who specialize in heating loss have been hired.
B．The noise made by the traffic near the center has become worse.
C．An increase in patients with hearing problems has been noticed.
D．A course to introduce students to medical careers has been set UP"
参考答案
正确答案：C
解析：细节题。文章一开始就谈到...We've become really alarmed over the health center by the number of students we are seeing，who are experiencing heating loss，之所以震惊是因为我们所看到的经历听觉受损的人中学生数量之大令人吃惊。
