问题
选择题
有甲、乙、丙、丁、戊5只猫。其中甲乙丙都是短毛,丁和戊是长毛,甲乙为雌猫,其余是雄猫。甲和戊的后代全是短毛,乙和丁的后代,长毛和短毛小猫均有,欲测定丙猫的遗传因子组成,最好选择[ ]
A.甲猫
B.乙猫
C.丁猫
D.戊猫
答案
答案:B
有甲、乙、丙、丁、戊5只猫。其中甲乙丙都是短毛,丁和戊是长毛,甲乙为雌猫,其余是雄猫。甲和戊的后代全是短毛,乙和丁的后代,长毛和短毛小猫均有,欲测定丙猫的遗传因子组成,最好选择[ ]
A.甲猫
B.乙猫
C.丁猫
D.戊猫
答案:B
选用方框内所给词的适当形式填空。
小题2:Mr.Green felt __________. Because he had a wonderful trip. 小题3:It’s not my knife. ________ is in the desk. 小题4:Miss Wang is a _______ teacher. All students like her very much. 小题5:They eat lots of vegetables and fruits every day, So they are __________. |