单词拼写（满分5分，每小题各0.5分）
小题1:Mike r____________ our team and gave a speech at the meeting.
小题2:Nothing could have been more a____________.
小题3:Since her c____________ she had wanted to work with animals in their own environment.
小题4:The party then searched the whole cave t____________ but did not find anything.
小题5:He has pointed out that the tree is a useful source of i____________.
小题6:It rained and t____________ the football match was put off.
小题7:The Hubble will tell us a great deal about the age and size of the u____________.
小题8:The most u____________ car was a Benz which had only three wheels.
小题9:At that time, hunger was a d____________ problem in many parts of the countryside.
小题10:This work will not be easy; we have to o____________ the difficulty.