炎症显像剂^99mTc-AGAB的优点中，不包括（）

A.适用于诊断慢性炎症

B.一步法标记

C.显像剂来源方便、价廉

D.核素能量适中、图像质量佳

E.肝脾有较低的放射性，特别适用于肝脓肿的诊断

完成下列句子的同义表达

1. John is better at playing football than Peter.

    John __________ __________ __________ playing football than Peter.

2. Why don't you ask our English teacher for help?

    __________ __________ __________ our English teacher for help?

3. Yes, I agree.

    Yes, I have __________ __________ idea __________ you.

4. Betty's mum doesn't think that today people eat as well as in the past.

    Betty's mum thinks that today people eat __________ __________ in the past.

5. Now we don't have as much free time as we did before.

    Now we have __________ __________ __________ than we did before.