Ⅰ. 词汇 （Ａ）根据句意及首字母的提示，完成单词。
１. There are 1.3 b_________ people in China.
２. The passage is very long; do you think which p_________ is more difficult?
３. Please turn on the l__________, it’s too dark in the room.
４. Tom’s grandpa lives a________, so he feels very lonely.
５. --- How much did the book c_________ you?
--- Ten yuan.
