正常情况下,人类精子的染色体组成是( )
A:22条+X
B:22条+Y
C:22条+X或22条+Y
D:22对+X或22对+Y
100里面有____个十。
You can visit China at____ ____
—You have been sitting on my hat and now it is badly _________.
—Sorry. I will ask my boss for _________ on my salary to buy you a new one.