Body paint is used mostly by men in preliterate societies in order to attract good health or to ______ bad luck.

Nowhere in nature is aluminum found free, owing to its ...

单项选择题Nowhere in nature is aluminum found free, owing to its always ______ with other elements, most commonly with oxygen.

There is no person ______ is always in the right.A．whoB...

单项选择题There is no person ______ is always in the right.