A：单克隆抗体
B：杂交瘤细胞
C：产生特定抗体的B淋巴细胞
D：在单抗上链接抗癌药物
Mrs Read __________ the cleaning every day.
A. Let's go.
B. Are these your shoes?
C. Let's play football.
D. They are on your feet．
E. What are they?
A：It's warm today．____
B：Great!____
A：Where are my shoes?
B：____
A：No．they aren't．
A：Look!____
B：Oh．I'm sorry．
用氯化钠固体配制一定质量分数的氯化钠溶液，不需要用到的仪器是（ ）
