【简答题】基因是_________中决定生物性状的小单位,由于基因位于染色体上,生物体细胞中染色体和基因都成__________存在,生殖细胞中染色体和基因都成________________存在。
【简答题】Although he looks old , he was not lost the use of his limbs.
【简答题】每种生物的体细胞中染色体的数量是_________的,但________不同,染色体在体细胞中_______存在,因此,控制________ 的基因也是________存在的。
【单选题】_______ Mr Dong is over 70, _______ he still looks very healthy. [ ]
【简答题】在各种生物细胞中,染色体的______、______和______都是一定的.
【单选题】— What do you think of your English teacher?— He is friendly to us although sometimes he looks .A
A.
— What do you think of your English teacher? — He is friendly to us although sometimes he looks ____. A. happy
【单选题】Although he eats ________, he doesn't looks ____________.