TPO17 ANIMAL SIGNALS IN THE RAIN FOREST - 英檢

【In the green-to-yellow lighting conditions of the lowest levels of the forest,
yellow and green would be the brightest colors,
but when an animal is signaling, these colors would not be very visible if
the animal was sitting in an area with a yellowish or greenish background.】


7. Which of the sentences below best expresses the essential information in
the highlighted
sentence in the passage? Incorrect choices change the meaning in important
ways or leave out
essential information


○When an animal is signaling in an area with green-to-yellow lighting
conditions, its signal will not be visible if the background is brightly lit.

○In the lowest levels of the forest, an animal's signals are not easily seen
unless there is a yellowish or greenish background.

○In the green-to-yellow lighting conditions at the lowest levels of the
forest, only signals that are themselves green or yellow will be bright enough to be seen in most areas.

○Although green and yellow would be the brightest colors near the forest
floor, these colors would make poor signals whenever the forest background was also in the
green-to-yellow range.

答案是 4 不懂為什麼是4 我選1 ....

我不太懂的地方是 他文章提到 these colors would not be very visible
選項裡面說these colors would make poor signals
這樣不是矛盾嗎?

請幫我分析 謝謝 : )

--