题目

You may be surprised to see “making sure children never suffer” as a mistake. The following __41__ may help you understand how rescuing children from all suffering __42__ weakness. A little boy felt sorry for a butterfly struggling to 43  from its chrysalis(蛹). He decided to _44_ the butterfly. So he peeled(剥开) the chrysalis open for the butterfly. The little boy was so _45  to watch the butterfly spread its wings and fly off into the sky. Then he was horrified __46__ he watched the butterfly fall to the ground and die because it did not have the muscle __47_ to keep flying对生物的生存来说，不是它生长的基本条件的是    (    ) A．空间    B．温度    C．营养    D．时间