填空题

1. The sales call can be_____(annoy) sometimes.

2.I wonder when you            _____(be) free tomorrow.

3. It's an English story book_____(contain) many funny pictures.

4. Why           _____(not ride) the bike for the trip?

5. If you wish to pass the exam,work_____(hard).

分化型甲状腺癌转移灶经临床治疗后¹³¹I显像阴性，而¹⁸F-FDG显像阳性，提示（）

A.预后好

B.癌细胞碘代谢活跃

C.癌细胞分化程度低

D.癌细胞糖代谢降低

E.癌细胞乏氧