The strict teacher _________ me very tired.[ ]
A. does
B. let
C. makes
D. puts
答案:C
急性失血所致患者休克时,提示失血量至少已达总血量的()。
A.10%
B.10%~20%
C.20%~40%
D.>40%
E.5%~10%
Syntax is the study of().
A. language functions
B. sentence structures
C. textual organization
D. word formation