CT图像噪声增加的最直接后果是（）
A.图像的伪影加重
B.密度分辨率降低
C.图像均匀性降低
D.空间分辨率降低
E.Ｚ轴分辨率降低
参考答案：B
学生自我评价
In our country every boy and every girl _____ the right to education. [ ]
A. has
B. have
C. is
D. are
