下列影像检查中，脑囊虫病钙化最好的显示方法为（）
A.DSA
B.ECT
C.CT
D.MRI
E.X线片
参考答案：C
将下列句子变为否定句。
1. I have lunch at school.
I ______ ______ lunch at school.
2. We watch TV in the evening.
We ______ ______ TV in the evening.
3. They play football after school.
They ______ ______ football after school.
4. Lucy and Lily like music.
Lucy and Lily ______ ______ music.
一般钢结构中，承重结构的钢材宜采用（）。
A.Q235、Q345、16Mnq、Q390、15MnVq
B.Q235、Q345、16Mnq、45号钢
C.25MnSi、A3F、BY3F、Q345
D.45号钢、15MnTi、15MnVq、B3F、35号钢
