Without petroleum human life ____quite different today.A、isB、will beC、would have beenD、

Among humans, the effects of aging vary from one individual to another. The average life _

An actor cannot well play the role without life experience ______ a dancer can make a diff

An actor cannot play the role without life experience______ a dancer can make a difference

An actor cannot play the role without life experience______ a dancer can make a difference

The government has to consider whether the destruction of one human life can be______by th

Without the sun s light______the earth s surface, no life could exist on the earth.A．warms