一

二

三

四

五

4.—I have no 　　　　　(力气)to walk any further.  —Come on!Only a short distance is left.You can make it. 5.—My eyes are painful. —You’d better have them 　　　　　(检查).  6.—　　　　　 (许多) rare animals have settled in the reserve built last year.  —Good news!I think they will 　　　　　(生存)there.  7.—Are the scientists 　　　　　(确信)of the 　　　　　(存在)of these creatures?  —Yes.They believe these creatures 　　　　　(相关联)a common ancestor. 

strength　

examined　

Dozens of

survive　

convinced

existence

are linked to