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【单选题】
含有溴离子、碘离子的混合溶液及四氯化碳的试管中逐滴加入氯水,在四氯化碳层中可观察到的现象是 ( )。
A.
先出现紫色,随后变黄色
B.
先出现黄色,随后出现紫色
C.
先出现紫色,随后出现黄色,再变成无色
D.
先出现紫色,随后变无色,最后出现黄色
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A.
be taken to the public and resolved by democratic means
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be resolved by a few judges and lawyers
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【单选题】Sometime soon, according to animal-rights activists, a great ape will testify in an American courtroom. Speaking through a voice synthesizer, or perhaps in sign language, the lucky ape will argue that...
A.
taken to the public and resolved by democratic means
B.
resolved by a few judges and lawyers
C.
looked on as a mockery
D.
confined to such animals as apes
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A.
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B.
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C.
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D.
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