强迫症的主要症状有()。
A.强迫意向
B.强迫观念
C.强迫情感
D.强迫行为
参考答案:A, B, D
Loulan City is not at all ________ a traveler who has never seen the desert before can expect. [ ]
A. that
B. where
C. what
D. which
水泥混凝土的砂石比为0.59,那么其砂率为______。
A.2.69 B.1.69 C.0.73 D.0.37