A.nhân bản vô tính.
B.gây đột biến bằng cônsixin.
C.lai giữa các giống.
D.nuôi cấy mô, tế bào sinh dưỡng.

A.Có túm lông trên vành tai.
B.Mù màu.
C.Máu khó đông.
D.Bạch tạng.

A.4/9.
B.3/16.
C.2/9.
D.3/32.

A.There’s no doubt about that.
B.It doesn’t matter at all.
C.It is very kind of you to say so.
D.I am sorry to hear that.

A.The doctor suggested that I do exercise and eat more vegetables.
B.The doctor told me to do exercise and eat more vegetables.
C.The doctor had me to do exercise and eat more vegetables.
D.The doctor reminded me to do exercise and eat more vegetables.

A.heat
B.sweat
C.seat
D.meat

A.heat
B.sweat
C.seat
D.meat

A.provoked
B.achieved
C.defined
D.emerged

A.determine
B.pollution
C.essential
D.charity

A.determine
B.pollution
C.essential
D.charity