The tiger, once a     animal to humans, is now        of disappearing on the earth.
A．dangerous, dangerB．dangerous, in danger
C．in danger, in dangerD．danger, in danger
B

試題分析：考查danger的詞性變化和短語。Dangerous是形容詞“危險(xiǎn)的”；in danger處于…危險(xiǎn)中；句意：老虎，曾經(jīng)對人類來說是一種危險(xiǎn)的動(dòng)物，現(xiàn)在正處于危險(xiǎn)的情況之中。故B正確。
點(diǎn)評：danger的形容詞是dangerous,固定詞組in danger處于危險(xiǎn)中；在平時(shí)的學(xué)習(xí)中要注意這些詞的固定搭配。
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