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搜题
【单选题】
The two delegates had an in-depth exchange of views on how to enhance their_____cooperation.A.
ethical
B.
bilateral
C.
mandatory
D.
subsidiary
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皮皮学刷刷变学霸
举一反三
【单选题】Choose the word or phrase which best completes each sentence. l. You cannot _____ ignorance as your excuse; you should have known what was happening all along. A. plead B. refer to C. defend D. persis...
A.
A
B.
C
C.
B
D.
D
E.
C
F.
D
G.
A
H.
C
I.
B
J.
B
【多选题】下列化合物中可以与 Tollens 试剂发生银镜反应的是 ( )
A.
HCOOH
B.
CH 3 COCH 3
C.
CH 3 CHO
D.
CH 3 CH 2 COC 6 H 5