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【单选题】
能竞争性拮抗磺胺类药物的抗菌作用的化学物质是A.
乙酰水杨酸
B.
对氨水杨酸
C.
对氨苯甲酸
D.
叶酸
E.
乙胺嘧啶
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反馈参考答案：
举一反三
【单选题】一建筑物采用坡屋顶,其室外地面的标高是 -0. 450m, 其室内地面的标高是 -0.000. 建筑物屋檐的标高是 8.500m ,屋脊的标高是 8.900m ,则该建筑物的建筑高度是( ) m 。
A.
8.950
B.
8.900
C.
9.350
D.
9.150
【单选题】I appreciated ____ to your school to give a lecture
A.
to be invited
B.
to have invited
C.
having invited
D.
being invited
【单选题】I appreciated __ the opportunity to study abroad two years ago. [ ]
A.
to have given
B.
to have been given
C.
having given
D.
having been given
【单选题】Dear Mom, I wonder if you ever knew how much I appreciated _____ you gave me even though I often simply said, “Thanks Mom.”
A.
all which
B.
all that
C.
in that
D.
for that
【单选题】I appreciated ____ the opportunity to study abroad two years ago.
A.
having been given
B.
having given
C.
to have been given
D.
to have given
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