1．(2019·苏州模拟)From 650 BC to 323 BC the Greek civilization made advances in various fields that ________ the world ever since and will continue to do so.
A．influenced B．have influenced
C．had influenced D．are influencing
解析：选B 句意：从公元前650年至公元前323年希腊文明在众多领域都取得了进步。从那时起，这些进步就已经影响了世界，并将继续影响世界。ever since“从那时起(到现在)”，常常与现在完成时连用。
2．Schools in our city provide a variety of optional classes to ________ students of different levels.
A．cater to B．switch to
C．object to D．submit to
解析：选A 句意：我们城市的学校提供了各种各样的选修课来迎合不同水平的学生。cater to意为“迎合”；switch to意为“切换到，转到”；object to意为“反对”；submit to意为“向……呈交；顺从，服从”。根据句意可知选A项。
3．We don't dismiss the possibility ________ more cases of this kind will come up in the future in carrying out the plan.
A．where B．whether
C．why D．that
解析：选D 句意：我们不能排除这种可能性，在今后实施计划过程中会有更多这样的案例出现。此处that引导的是同位语从句，修饰the possibility。
