一个男子把X染色体上的某一突变基因传给儿子的概率是（ ）

反比例函数$y=\frac{k-1}{x}$的图象在每个象限内，y随x的增大而减小，则k的值可为（   ）

2011年1月11日，我国自主开发的歼20 “隐形飞机”在成都首飞成功．歼20的机身呈菱形，能使反射的电磁波偏离接收它的雷达．它的表面采用新的雷达吸波材料制作，能吸收来自雷达的能量．对歼20“隐身”的原因，下列说法正确的是（）

    Now you are in a dinosaur ____park. Coming here, you will find a kind of old ____, dinosaur, which died out millions of years ago. In our park, we are happy to show you ____ dinosaurs, which lived in the Jurassic. The four-storied-building-high grass-eating dinosaurs are submissive (温顺的) and kind. You can ____ towards them and touch them. But the ____  of them are dangerous. The four-legged meat-eating dinosaurs are very cruel. Please don't ____ them and don't try to give them food. The ____ here is very thick and full of all kinds of animals that lived in the Jurassic. Without any special____and the leading of the guide, please don't step into it. OK, I'm sure that our park will ____anyone who comes here and you will ____a lot from it.

My parents strongly _________ my _________ to go to college out of Beijing, because they don't like my being far away from them.