CT扫描常见的伪影有（）
A.环形伪影
B.放射状伪影
C.月牙状伪影
D.条纹状伪影
E.以上全不是
参考答案：A, B
Surely it doesn't matter where the student associations get their money from; what _____
is what they do with it. [ ]
A. counts
B. applies
C. stresses
D. functions
______length, ______breadth and______height of______cube are equal.
A．The...the...the...a B．/.../.../...a C．A...a...a...the D．The.../.../.../
