选择偏倚的种类包括()。
A.测量偏倚
B.检出偏倚
C.诊断怀疑偏倚
D.回忆偏倚
E.混杂偏倚
参考答案:B, C
—Hey, Mike. An Indian man recently sang for 80 hours straight, setting a new Guinness world record.
—Really? It’s really a(an) __________ feat(本事).
A.extraordinary
B.curious
C.special
D.intelligent
He often reads books in the , because there are so many books there. [ ]
A. pool
B. library
C. mall
D. restaurant