Add 1ml solution C (Nessler’ s reagent) to the 25ml water sample. Then agitate the mixture for 20 seconds.

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问题 Add 1ml solution C (Nessler’ s reagent) to the 25ml water sample. Then agitate the mixture for 20 seconds.

选项 A、stir
B、tame
C、stamp
D、probed

答案A

解析 选项A为“搅拌”;选项B为“抑制”;选项C为“标记”;选项D为“探索,调查”。分析各选项词语的意思,只有A项与画线词义最为接近,故选A。
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