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【单选题】
下列关于实验操作步骤的叙述中,正确的是( )A.
用于鉴定还原糖的试剂，可直接用于蛋白质的鉴定
B.
脂肪的切片法鉴定需要用显微镜才能看到被染成橘黄色的脂肪粒
C.
鉴定还原糖时，要加入试剂甲液摇匀后，再加入乙液
D.
用于鉴定蛋白质的双缩脲试剂A液与B液要混合均匀后，再加入含样品的试管中，且必须现混现用
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【单选题】At the science museum，the boys and girls get to know__________.
A.
what is the spaceship like
B.
what the spaceship looks like
C.
how the spaceship looks 1ike
D.
how does the spaceship 1ook like
【简答题】动画片《奇才》、《冰河世纪》、《冰冻星球A.E.》是( )的代表作品。
【简答题】General Pershing was a famous American. He was in the American army and fought in Europe in the First Wor l d War. After he died. some people in his hometown wanted to remem be r him , so th e y put u...
【简答题】Where have all the boys gone？You may be able to find them in the gym, at work or hanging out, but there’s one important place where boys are underrepresented, and the problem seems to be getting wors...
【单选题】250ml的20%甘露醇要求在30min内输完,应调节滴数约为(点滴系数为15滴/ml)
A.
105滴/min
B.
125滴/min
C.
145滴/min
D.
155滴/min
E.
175滴/min
【单选题】–- Why is Tom unhappy today? -- He got______ points of all the boys.
A.
the most
B.
more
C.
the fewest
D.
the least
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