It is essential that mankind ------ ways and means to protect the environment.A adopt B have adopted C will adopt D will have adopted答案上选的是B have adopted 感激不尽!
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![It is essential that mankind ------ ways and means to protect the environment.A adopt B have adopted C will adopt D will have adopted答案上选的是B have adopted 感激不尽!](/uploads/image/z/6985168-16-8.jpg?t=It+is+essential+that+mankind+------+ways+and+means+to+protect+the+environment.A+adopt+B+have+adopted+C+will+adopt+D+will+have+adopted%E7%AD%94%E6%A1%88%E4%B8%8A%E9%80%89%E7%9A%84%E6%98%AFB+have+adopted+%E6%84%9F%E6%BF%80%E4%B8%8D%E5%B0%BD%21)
It is essential that mankind ------ ways and means to protect the environment.A adopt B have adopted C will adopt D will have adopted答案上选的是B have adopted 感激不尽!
It is essential that mankind ------ ways and means to protect the environment.
A adopt B have adopted C will adopt D will have adopted
答案上选的是B have adopted 感激不尽!
It is essential that mankind ------ ways and means to protect the environment.A adopt B have adopted C will adopt D will have adopted答案上选的是B have adopted 感激不尽!
楼主看错了答案或者答案印刷错误,正确答案是A,而不是B.
翻译:人类采用各种方式方法来保护环境是必要的.
固定句型it's essential that从句中,that引导的主语从句必须采用虚拟语气,即that从句的谓语动词由“should + 动词原形”构成,且其中的should经常可以省略.
所以答案是:(should) adapt,即答案A为正解.
已经做过的事情用完成时态。
这句话翻译如下:人类采取手段和方法来保护环境是必要的。
根据前一句话的一般现在时态,表明后面的手段和方式已经被采取了,所以应该用现在完成时。
我觉得改选A呢,虚拟语气嘛,当然不排除有上下语境的问题。仅供参考