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【单选题】
The 15:30 train to Sheffield has been called off _______ situations beyond our control.A.
in terms of
B.
due to
C.
according to
D.
in spite of
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举一反三
【单选题】He can play almost every kind of music instrument but he is good _.
A.
at a flute
B.
at the flute
C.
at flute
D.
at the flutes
【单选题】He can play almost every kind of music instrument but he is good _ .
A.
at a flute
B.
at the flute
C.
at flute
【多选题】总离子强度调节缓冲剂(TISAB)的作用
A.
维持试液和标准溶液恒定的离子强度
B.
保持试液在离子选择性电极适合的pH范围内
C.
使被测离子释放成为可检测的游离离子
D.
保持电极灵敏度
【单选题】He can play almost every kind of music instrument but he is good
A.
at the flute
B.
at flute
C.
at a flute
D.
at that flute
【单选题】He can play almost every kind of music instrument but he is good ___.
A.
at a flute (n.长笛）
B.
at the flute (n.长笛）
C.
at flute (n.长笛）
D.
at the flutes (n.长笛）
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