A:基因工程技术
B:诱变育种技术
C:杂交育种技术
D:组织培养技术
A:____
B: Hi.____?
A: No,____
B: This is an apple. Here you are.
B: It makes me tall.
A: Yes.____
A.We are hot.
B. You are tall.
C. Hello!
D. It's big.
E. Are you cold?
2.01吨=____千克
5.6厘米=____米