26．Even if there is no scientific proof yet ______ secondhand smoke causes cancer, there is no reason why nonsmokers should be forced to take this risk．
A．which
B．that
C．when
D．Where
答案：B
阅读下面的短文，根据短文内容完成表格中所缺信息，每空一词。 Halloween falls on October 31st. It is one of the favourite festivals for children in the West. People dress up in different costumes like a witch, a ghost(鬼) or a skeleton (骷髅). The children go to houses to say “Trick or treat!” The game is so fun. Before, if a child is bad, he or she will get a trick like having a stone in his or her bag instead of (代替) some candy. Nowadays (如今), no one gets tricks. Every child can receive lots of candy. Parties are also popular in the evening. People get to parties in different costumes and play different games. People also listen to ghost stories and watch scary movies. A FUN FESTIVAL
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