Don't ______. You'll ______ the new surroundings and different ways of lifestyle.
A:lose your heart; apply to
B:lose heart; apply yourself to
C:lose your heart; adapt to
D:lose heart; adapt yourself to
秦始皇、汉武帝都是中国历史上杰出的封建帝王。下列关于秦皇汉武共同点的说法,正确的是( )
①三个氢氧根离子____②干冰____ ③汞元素____.