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45.What can be seen in a rainforest according to the text?

• A、Leaves and branches of a tree never actually touch those of the other trees.
• B、Tree diseases make life more difficult for leaf-eating insects.
• C、Tall trees protect themselves from forest animals with their branches.
• D、The ground floor is all covered by leaves and branches.

(25)＿

• A、performed
• B、worked
• C、chatted
• D、travelled

54＿＿