ost callous observer would be moved by news report about the war. 3) It was so late that it was futile to try to catch the train.
4) I noticed her blue eyes immediately; they were her most salient the features.
5) You’d better water the flowers, or they will wither. 如果将同源词、同义词、同音词、反义词、类属词以及其它关系词配对分组，并融入句子段落中，其记忆效率不可比拟。
例如：
1) I suppose that everyone except me will accept the invitation.
2) I’m sorry to desert you before the desert is served.
3) This horse has just given birth to a foal.
4) The door was clean ,but the handle was contaminated.
