If all the plants on the earth die people animals will be able to live.A. neither; norB.

问题补充：

If all the plants on the earth die, people animals will be able to live.

A. neither; nor

B. both; and

C. not only; but also

D. either; or

答案：

(答案→)A. neither; nor

B. both; and

C. not only; but also

D. either; or

解析：Both; and 两个都，既……又……；Not only; but also不但……而且……；Neither nor两者都不，既不是……也不是。Either; or要么……要么……；两个都，既……又……；句意：如果地球上所有的植物都死了，人和动物都不能活。故选A。