IR代表()
A．快速梯度序列
B．反转恢复序列
C．部分饱和序列
D．梯度回波序列
E．自旋回波序列
参考答案：B
My aunt has a clothes store. She ______jackets at very good prices. [ ]
A. takes
B. buy
C. affords
D. sells
一般细菌在______的条件下最适宜生长繁殖。
A．(5±2)℃
B．(10±2)℃
C．(15±2)℃
D．(37±2)℃
