一只雌猫一次产了三只小猫，这三只小猫在毛色上不完全相同，则说明物体具有（  ）

先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。

    Henry comes from America．He likes1 a lot．He's visited many2．Last summer,he went to India，a county3a long history.During the trip there，he met something4from his culture(文化)．

    One day,he wanted to visit a palace．He went out of the hotel and5a taxi.When he told the driver and palace's name，the Indian6his head．Henry said

    again and the driver shook his head again．Henry,of course，got7．"Why did you always refuse (拒绝)me?"he shouted．"Please drive me to the palace'"The driver answered"Yes．sir!"and shook his8again．The taxi started and Henry didn't say a word．He9it，and then he said to himself,"I see, 'shaking the head' means'10 'here."

某日中午12时整，甲船自A处以l6km/h的速度向正东行驶，乙船自A的正北18km处以24km/h的速度向正南行驶，则当日l2时30分时两船之间的距离是____ km．

要使$\frac{\sqrt{x}}{\left|x\right|-5}$有意义，则字母应满足的条件是（　　　）