If nature does not provide man with the necessary material,it is the laboratory ____ he will turn to for it．\x05 \x05A．where\x05B．that\x05C．which\x05D．what选B怎样翻译

If nature does not provide man with the necessary material,it is the laboratory ____ he will turn to for it．\x05 \x05A．where\x05B．that\x05C．which\x05D．what选B怎样翻译
If nature does not provide man with the necessary material,it is the laboratory ____ he will turn to for it．\x05
\x05A．where\x05B．that\x05C．which\x05D．what
选B怎样翻译

If nature does not provide man with the necessary material,it is the laboratory ____ he will turn to for it．\x05 \x05A．where\x05B．that\x05C．which\x05D．what选B怎样翻译
翻译：如果自然界无法给人类提供所需的材料,那么只能求助于实验室了.

If nature does not provide man with the necessary material, it is the laboratory that he will turn to for it．
如果大自然不提供人类所需的物资，人类就只能求助于实验室了。