急求一篇英语阅读两个选择,帮忙在文中找到相关的线索

急求一篇英语阅读两个选择,帮忙在文中找到相关的线索
This bird has feathers that look like jewels in the sunlight,and it flies so fast that you can’t see how its wings move.What is this tiny creature?It is the hummingbird(蜂鸟)!
Most hummingbirds beat their wings from 55 to 80 times a second!This speed makes an interesting sound.It helps the hummingbird in many important ways.A hummingbird can fly sideways.It can even fly upside down!This fancy flying helps this tiny bird get its food.
The hummingbird eats nectar,the sugary juice found inside most flowers.Because it is too large to land on the petals(花瓣),it must hover(停留在空中) in mid-air while it dines on the flower’s nectar.Its small size and fast wing speed make hovering possible.It uses its long,narrow bill and tongue to reach deep into the center of a flower and lick up the liquid sugar.Then the hummingbird quickly flies sideways to the next flower.
Being one of the fastest birds around is hard work.The hummingbird’s heart beats from 200 to 1,200 times every minute.The hummingbird needs plenty of energy to fly from flower to flower.To get enough energy,a hummingbird must eat about every ten minutes.Most hummingbirds will eat insects,but they like nectar the most.Nectar from flowers is mostly sugar.The sugar gives a hummingbird the quick bursts of energy it needs to keep moving.
The hummingbird mother raises her family by herself.She builds a nest from plant materials.On the outside,most hummingbird nests are about the size of a quarter.Before long,two eggs fill the nest.Each egg is the size of a bean.
Before winter arrives,many hummingbirds migrate(迁移).Some fly very long distances.A biologist named Gayle Brown studied these interesting birds.She put bands on their legs to track them.One banded hummingbird was on Vancouver Island near Washington.A few weeks later,scientists in southern New Mexico caught the same bird.That’s a long way for such a small creature to travel.
66．What does the underlined word “It” in the second paragraph refer to?
A.An interesting sound.B.Wing speed.C.Small size.D.Nectar
68．Gayle Brown put bands on hummingbirds because she wanted to _____.
A.see how far they fly B.know how much they grow
C.know what flowers they like best D.find where they build a nest

66:B,其实我猜的是这个It,你也没标.
It helps the hummingbird in many important ways. A hummingbird can fly sideways. It can even fly upside down!
后面两句说蜂鸟的飞行技巧,明显是振翅快的作用,而不是振翅的声音起的作用.
68：A
One banded hummingbird was on Vancouver Island near Washington. A few weeks later, scientists in southern New Mexico caught the same bird. That’s a long way for such a small creature to travel.
最后句说这么长的路对这样小的鸟来说很远,明显是想研究其迁徙的,但答案中只有A与迁徙靠点边,选A.