A:OB=OC
B:OD=OF
C:OA=OB=OC
D:BD=DC
给下划线字选择正确的拼音。
挑战(tiāo tiǎo)____ 朝代(cháo,zhāo)____
挑选(tiāo tiǎo)____ 朝夕相处(cháo,zhāo)____
① Here's a card for you. ____ A. I love you, too.
② What do you like? ____ B. Thank you.
③ I love you. ____ C. I like toy bears.
④ Don't throw stones. ____ D. I have some bread and juice.
⑤ What do you have for breakfast?____ E. Yes, Mr. Li.
一个男子把X染色体上的某一突变基因传给他的孙女的机率是( )
对美国“硅谷”的评价正确的是( )