根据下列句子及所给汉语注释，写出空缺处各单词的正确形式(每空只写一词)

小题1: These colorful     (气球)make the garden more beautiful than usual.  

小题2:Customs officers examined all        (行李) at the airport.    

小题3:You should think twice,but not jump at a        (结论).       

小题4:          (非洲)is the second largest continent in the world. 

小题5:They like movies so they go to the        (电影院) almost twice a week.  

小题6:On hearing the story,they burst into           (笑声).

小题7:He promised that he would be back on             (星期四).  

小题8:They took           (拥有) of the house as their own.

小题9:He lay on his          (胃) secretly to watch insects fighting.

小题10:To tell you the           (真相),I don’t agree with you.

蜱是森林脑炎病毒的

A．传染源
B．扩散宿主
C．储存宿主和传播媒介
D．以上都不是
E．中间宿主