题目内容：

语法填空

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卡标号为1～10 的 相应位置上。

Not all memories are sweet. Some people spend all their lives trying to forget bad experiences.

Now American researchers think they are close to developing a pill,   1.   will help people forget bad memories. The pill is designed to   2.   (take) immediately after a frightening experience. They hope it might reduce, or    3.   (possible) erase(抹去) the effect of painful memories.

In November, experts tested a drug on people in the U.S. and France. The drug stops the body    4.  (release) chemicals that fix memories in the brain. So far, the research    5.   (suggest) that only the emotional effects of memories may be reduced, not that memories are wiped out. They are not sure to   6.   degree people’s memories are affected.

The research has caused a great deal of   7.   (argue). Some think it is a bad idea, while others support it. Supporters say it could lead to pills which prevent or treat soldiers’ troubling memories after war. They say that there are many people who suffer from terrible memories. 8.   , those who are    9.  the research say that maybe the pills can change people’s memories and changing memories is very   10.   (danger) because memories give us our identity.