1·It had long been thought that hummingbirds, which forage by day, pollinate its red flowers and that hawkmoths, which forage at night, pollinate its white flowers.
长期以来，人们一直认为，白天觅食的蜂鸟会给它的红色花朵授粉，而晚上觅食的鹰蛾会给它的白色花朵授粉。
2·Which of the following, if true, would be additional evidence to suggest that hummingbirds are attracted to the red flowers and hawkmoths to the white flowers of the scarlet gilia?
以下哪项如果属实，可作为补充数据以说明蜂鸟被红花吸引，鹰嘴鸟被绯绯草的白花吸引？
3·"The smaller the bird, the more viscous the air is," he said, which is partly why hummingbirds can maneuver so well and for so long.
鸟儿越小，空气就越有粘性“，他说。”这也部分说明了为什么蜂鸟能飞行的那么好那么久的原因。
4·One of the rarest hummingbirds, the spatuletail is found only in Peru and is unique in appearance.
最稀罕的蜂鸟之一。 叉拍尾蜂鸟外观独特，仅生活于秘鲁。
5·The red hibiscus plant under the window is blooming and hummingbirds are starting to make their presence known as they dart by.
窗外红色的芙蓉正在盛开，蜂鸟开始用快速飞过来宣告它们的存在。