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【单选题】
____________________ is the first extant work on dramatic theory.A.
The Republi
B.
Mimesi
C.
Poetics
D.
Dithyramb
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举一反三
【单选题】---Oh, Mrs. King, your dress looks nice. Is it new? ---No, I ______it since two years ago.
A.
had
B.
bought
C.
have had
D.
have bought
【简答题】在测定熔点时样品的熔点低于( )以下,可采用浓硫酸为加热液体, 但当高温时,浓硫酸将分解, 这时可采用热稳定性优良的( )为浴液。
【简答题】热电偶的热电势由______和______组成。
【单选题】— Hi, Mrs. King, your dress looks nice. Is it new? — Oh, no, I bought it _____ .
A.
two years ago
B.
for two years
C.
in two years
D.
two years before
【单选题】—Oh, Mrs. King, your dress looks nice. Is it new? —No, I _ it for two weeks. [ ]
A.
had
B.
bought
C.
have had
D.
have bought
【简答题】在测定熔点时样品的熔点低于 ( )摄氏度以下,可采用浓硫酸为加热液体, 但当高温时,浓硫酸将分解, 这时可采用热稳定性优良的 ( )为浴液。
【单选题】—Oh, Mrs. King, your necklace looks nice. Is it new? —No, I _____ it for two years. [ ]
A.
had
B.
have had
C.
bought
D.
have bought
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