题目

    Five years ago, when I taught art at a school in Seattle, I used Tinkertoys as a test at the beginning of a term to find out something about my students. I put a small set of Tinkertoys in front of each student, and said:”Make something out of the Tinkertoys. You have 45 minutes today ― and 45 minutes each day for the rest of the week.”    A few students hesitated to start. They waited to see what the rest of the class would do. Several others checked the instructions and made something according to one of the model plans provided. Another group built something out of th亲代的许多性状之所以在子代身上体现，原因是    A、精子和卵细胞中携带着亲代的性状      B、精子和卵细胞中携带着控制着性状的基因         C、总在一起生活，长相就会相像                   D、父母所有的性状都遗传给了子代