5. Which of the following birds are mentioned as those that build nests that include unusual objects?

　　(A) Ravens

　　(B) Ospreys

　　(C) Crows

　　(D) Sparrowhawks

　　6. According to the passage , when gathering materials to build their nests, sparrowhawks do which of the following?

　　(A) Hang upside down

　　(B) Select only green twigs

　　(C) Use objects blowing in the wind

　　(D) Collect more branches than necessary

　　7. The word "these" in line 20 refers to

　　(A) golden eagles

　　(B) generations

　　(C) winds

　　(D) nests

　　8. The word "load" in line 23 is closest in meaning to

　　(A) weight

　　(B) number

　　(C) section

　　(D) level

　　9. The author mentions twenty percent in line 23 to indicate that

　　(A) eagles are twenty percent bigger than most birds

　　(B) twenty percent of all nests include foundation branches

　　(C) the nests of eagles are twenty percent of larger than those of other birds

　　(D) birds can carry twenty percent more of their own weight

　　參考答案：BCDCB ADAD