题干

面颊上有酒窝与无酒窝是一对相对性状,决定有酒窝的基因(D)是显性基因,决定无酒窝的基因(d)是隐性基因.一对有酒窝的夫妇生了一个无酒窝的孩子,这对夫妇的基因型是( )

A:DD,DD

B:Dd,Dd

C:DD,Dd

D:DD,dd

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B

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      A couple of weeks ago, I made a trip to Toronto with my granddaughter who just turned three years old. The two of us were on our way to  1   her parents, and my wife—her  2    who had been gone for over a week. We were all anxious to  3    again and as I pulled out of Mamere and Papere's driveway in Chelmsford, Hailee and I were both  4    about the trip and couldn't wait to arrive at our   5.

When we completed the “SEVEN”-hour trip to Toronto later that day, the reunion was absolutely  6 and I can sincerely say I enjoyed every single minute of that   7     journey.

      Hailee is at that “I want to  8  it myself” stage of her life. And if you can just get over the “hurry-up syndrome” we acquire as  9, it is wonderful to witness. Who knew that putting a straw into the  10  in a juice box for the very first time could be such an earth-shattering (惊天动地的) event? Or being  11  enough to actually open the fridge door for the first time? Or putting on your own  12  on the right feet would be so  13?

      I'll never forget the look on her face the day she was able to  14 into my truck by herself. She finally  15 on my seat, holding onto the steering wheel (方向盘) and declared 16, “I did it!” And when she could actually put her own seat belt on—what a(n)  17!

    Have you ever watched a three-year-old 18 to sip a McDonald's milkshake through a straw? It is hard enough for an adult, too. And 19 every time the icy solution (溶液) touched her lips, you could see the 20 in her eyes. I learned that you can't hurry a child through a milkshake.