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搜题
【单选题】
当宏观经济进入周期循环的波谷时,各国政府一般采用( )的货币政策和财政政策抑制经济衰退。
A.
紧缩
B.
扩张
C.
提高利率
D.
降低利率
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举一反三
【单选题】— Look! Our teacher has ________ tense expression on her face. — So she does. It seems that ________ news is true. [     ]
A.
a; /
B.
a; the
C.
the; /
D.
the; a
【单选题】—Look! Jane has ______ tense expression on her face. —So she does. It seems that ______ news is true.
A.
a ; /
B.
a ; the
C.
the; /
D.
the; a
【单选题】在液相色谱中,梯度洗脱适用于分离的是
A.
异构体
B.
理论塔板数
C.
沸点相差大的试样
D.
极性变化范围宽的试样
【单选题】在液相色谱中,梯度洗脱适用于分离的是
A.
异构体
B.
沸点相近,官能团相同的化合物
C.
沸点相差大的试样
D.
极性变化范围宽的试样
【单选题】She was so angry that her face was ______of blood.
A.
dropped
B.
drained
C.
spilt
D.
dripped
【单选题】She always has a smile on her face. What makes her so ? [     ]
A.
happily
B.
happy
C.
sad
D.
unhappy
【单选题】在液相色谱中,梯度洗脱适用于分离的是
A.
异构体
B.
沸点相近,官能团相同的化合物
C.
沸点相差大的试样
D.
极性差异大、组分多的试样
E.
同系物
【简答题】He was __________ give her a blow to the face. [A] so angry that [B] such angry as to [C] such angry that [D] so angry as to
【单选题】There was a _________ look on her face so I repeated the question.
A.
puzzled
B.
puzzling
C.
puzzle
D.
puzzlement
【单选题】The teacher always ______ a smile on her face, so the students never feel_______. [     ]
A.
puts on; frightened
B.
wears; frightened
C.
puts on; frightening
D.
wears; frightening
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