词汇；根据下面每句句意、汉语提示或英语解释，写出空白处所缺单词的正确形式，每空一词。1.Ifthistech...

问题详情：

 词汇；根据下面每句句意、汉语提示或英语解释，写出空白处所缺单词的正确形式，每空一词。

1. If this technology is ________(成功), human beings could live longer.

2. A group of scientists have been trying to ________(解决) this problem for years.

3. Now more and more people begin to realize the______(重要) of learning English.

4. I still don’t understand that. Can you make the meaning __________ (easy to understand)?

teacher has ______ (to give a reason for something) again and again, but I can’t catch what he really means.

【回答】

essful 2. solve  3. importance  rer ained

知识点：单词拼写

题型：完成句子