使分式 $\frac{x+2}{x-1}$ 有意义的x的取值范围是（   ）

已知a,b为两条不同直线，$\alpha ,\beta$为两个不同平面，且$a\perp \alpha ,b\perp \beta$，则下列命题中不正确的是(    )

中国两名太空飞行员搭乘神州载人飞船进入中国空间站“天宫号二号”绕地球飞行，现已安全返回.飞船发射时用长征火箭发射.

猜卡片上的数．

这个数可能是：

阅读下面材料，在空白处填入一个适当的词或括号内单词的正确形式，字数不限。
     A young man told off ____ kid for eating on the subway in Hong Kong. The boy's  mother got angry about the young man's attitude and they started to argue with each other.
   This happened last month and has caused a huge ____(argue)on the Internet. Some people think the child didn't know eating shouldn't  ____（allow） on the Hong Kong subway.
   James Yien, ____ is the chairman of the Hong Kong Tourism Board, asked both sides to calm down. “We should learn to see things from the ____(other)side ,” he said. “Hong Kong citizens should be ____(polite)than the tourists and explain local rules to them.” He also thinks that travelers should ____ (improvement)their manners. “When in Rome, do ____the Romans do.”
The National Tourism Administration has released a list of tourist's worst behaviors, ____ (include) littering, spitting, line-jumping ,taking off shoes in public and ____ (smoke)in non-smoking areas.