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【单选题】
理论上,普通光学显微镜的最小分辨距离可达到:A.
1.25μm
B.
0.20μm
C.
0.61μm
D.
120μm
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举一反三
【单选题】那孩子遇上麻烦时,通常 向 老师 寻求帮助。( turn to )
A.
That child usually turns to his teacher for help when he meet troubles.
B.
That children usually turns to his teacher for help when he meets troubles.
C.
That child usually turns to his teacher for help when he meets troubles.
D.
That child usually turn to his teacher for help when he meet troubles.
【单选题】那孩子遇上麻烦时,通常向老师寻求帮助。
A.
That child usually turns to his teacher for help when he meets friends.
B.
That child usually turns to his teacher for help when he meets troubles.
【单选题】那孩子遇上麻烦时,通常向老师寻求帮助。(turn to)
A.
That child usually turns to his teacher for help when he meets friends.
B.
That child usually turns to his teacher for help when he meets troubles.
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