褐眼(A)对蓝眼(a)为显性,有一对褐眼正常色觉的夫妇,生了一个蓝眼色盲儿子,那么这对夫妇的基因型是A.AAXBXb和AaXBY B.AaXBXb和AaXBYC.AaXBXb和AAXBY D.AaXbXb和AaXBY
Must I finish reading the book today, Mr. Brown?
No, you _________. You can finish it in two days.( )
A.needn'tB.mustn'tC.can'tD.couldn't
Did Qingdao show ______ to the world during the SCO Summit (上海合作组织峰会)?
Sure! Her beauty, high technology and rapid development.( )
A.something specialB.anything special
C.special somethingD.special anything
Dad, about ________ of our classmates wear glasses.
Oh, that's terrible. You all should take good care of your eyes.( )
A.three fourthB.third fourth
C.third fourthsD.three quarters
I'm thirsty, Mom. I'd like something to drink.
We only have some _______ in the fridge.( )
A.orangesB.ice﹣creamC.juiceD.cheese
Excuse me. Is it my turn now?
Not yet.Please wait outside ______ your name is called.( )
A.untilB.sinceC.so