—I ________ in Hainan. The flood stopped me from going there. So I came to Shanghai.
A:haven't stayed
B:do not stay
C:didn't stay
D:am not staying
若函数fx为定义在R上的奇函数,且在(0,+∞为增函数,又f2=0,则不等式ln1e·xfx<0的解集为( )
有性生殖和无性生殖的本质区别是( )
Kate’s brother Danny1some New Year’s resolutions this year. 2 he is going to learn3the guitar. She is going to take the guitar lessons4practice every day. Next he wants to get good5. He is going to study6and he is going to do all his homework7 he watches TV. Finally, he wants to learn8new language. He is going to buy some 9 CDs and practice 10at home every morning.