請教黃金閱讀Begging by Nestlings - 英檢

※ 引述《PuddingPaste (未命名.txt)》之銘言：
: Paragraph 1：Many signals that animals make seem to impose on the signalers
: costs that are overly damaging. ■ A classic example is noisy begging by nestling songbirds
: when a parent returns to the nest with food. ■ These loud cheeps and peeps might give the
: location of the nest away to a listening hawk or raccoon, resulting in the death of the
: defenseless nestlings.■ In fact,when tapes of begging tree swallows were played at an artificial swallow nest
: containing an egg,the egg in that “noisy” nest was taken or destroyed by predators before the
: egg in a nearby quiet nest in 29 of 37 trials.■
: 13. Look at the four squares [■] that indicate where the following sentence
: could be added to the passage.
: The cheeping provides important information to the parent, but it could also
: attract the attention of others
: .
: Where would the sentence best fit?
: 為什麼答案是2不是1?不是應該要提出一個學說然後舉例嗎?
: 還是有什麼可以判斷的依據?@@
: THX
很簡單
1.插入句'The cheeping'就是指前一句的begging
2.插入句的'attract the attention of others'這個others就是對應後一句的
'hawk or raccon'

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