注意：此页面搜索的是所有试题
题目内容
（河南科技大学大学英语3(专升本)）
The truth is that it is only by studying history ______ we can learn what to expect in the future.
选项:
A:that
B:and then
C:by which
D:through which
选项:
A:that
B:and then
C:by which
D:through which
参考答案
