人与人的吸引建立在()
A、熟悉
B、个人特质
C、喝酒
D、相似互补
参考答案:A, B, D
AIDS is said _______ the biggest health challenge to both men and women in that area over the past few years.
A.that it is
B.to be
C.that it has been
D.to have been