China is ____ ( know ) for the Great Wall.
从方框中选择适当的短语,并用其正确形式填空。
as long as because of according to how about was full of
下列语句中,正确的有( )
鸟类的形态特征与其他脊椎动物有明显的不同,最突出的特征表现在鸟类( )