life will continue on the earth for millions of years to come will depend on         the problem of pollution can be solved.
A．How /whetherB．That/thatC．Whether / ifD．Whether / whether
D
本題考查主語(yǔ)從句和賓語(yǔ)從句。做此題必須要看清楚第一空是一個(gè)主語(yǔ)從句，而第二空是一個(gè)介詞后的賓語(yǔ)從句。因此，根據(jù)句意，生命是否會(huì)在以后的幾百萬(wàn)年里繼續(xù)將取決于污染問(wèn)題能否被解決。二空都要填是否。但主語(yǔ)從句“是否”只能用whether,介詞后也只能用whether.所以選擇答案D。
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