下列关于我国地理位置和疆域的叙述,正确的是( )
A:我国领土南北跨度大,大部分位于北温带,没有热带
B:我国东临大西洋,是一个海陆兼备的国家
C:我国陆地领土面积约960万平方千米
D:我国最大的岛屿是海南岛
已知 25+kx+x2 是一个完全平方式,则常数 k =____
Afterwards, we received a letter, in which he offered an a____ for his rudeness at the party.
— Cloning can lead to many complicated problems.
— __________. That's why a lot of people are strongly against it.