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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·Hummingbirds can be hard to spot.

蜂鸟可能很难瞥见。

4·How the hummingbirds find the nectar?

蜂鸟如何觅甘露？

5·Hi! Hummingbirds, I didn't expect you're here.

嗨！小蜂鸟，想不到你们会来。

6·Hummingbirds are the vampires of the flower world.

蜂鸟是鲜花界的吸血鬼。

7·It seems it is a common behaviour of hummingbirds.

看来，这是蜂鸟的一种常见行为。

8·Hummingbirds are the helicopters of the bird world.

蜂鸟是飞禽类的直升飞机。

9·Hummingbirds were stopping over honeysuckle flowers.

蜂鸟停在忍冬花上。

10·Why do hummingbirds and gorillas both have backbones ?

为什么蜂鸟和大猩猩都有脊骨？