7、Before doing chemical e______ in the lab you must follow your teacher’s instructions.

6、Tokyo is the s______ largest city in the world.

5、Decades ago a war forced all the residents to leave this village, making it d________.

4、He’s a liar; he didn’t tell you the t______.

3、Although she didn’t say anything, I s______ that she didn’t like the idea.

2、When we began to talk about the trip, she became silent. It’s obvious that she was trying to a_____ the subject.

1、Before the 1930s, tuberculosis (肺结核)was a d______ disease, and lots of people died from it.

15. We have a __________(目击者，证人)to the killing.

Ⅱ根据课文内容和首字母填空。

　 Justin Forster, a high school student went m___________ last Friday night. People have shown great i­­_________ in his disappearance. The police began their investigation into this case. Justin’s mother thought he was spending the night with friends. His father didn’t know he was staying out late. When Justin didn’t show u_________ at the family lunch the next day, they became w__________ and c__________ the police.

　 According to Kelly, a bright light a___________ outside her window and then it was moving and coming closer. She p_________ back the curtains and saw a large spaceship flying outside. She was f_____________ by what she had seen.

　 The police didn’t r________ out the possibility that Justin had been taken by alien. D_________ Sam Peterson who took charge of this case said sometimes people made up such amazing stories. Anyway they would not give up finding the truth.

14. The two houses are __________(类似，相似)in size.

13. Though these mysteries have p___________(困惑) people for a long time,

they still show great interest in them.