21 . 阅读以下英文,完成下列题。
B
You may often hear some myths(传言)about animals. For example, one dog year equals about seven human years, chameleons(变色龙)change color to match their environment... Today, let's talk about birds. It is said that if you touch a baby bird, the parents will completely abandon(抛弃)it. Do you really believe it?
In fact, most birds have a very poor sense of smell, so in most cases are unable to even notice the smell of humans on baby birds. Not only that, but most types of birds aren’t so quick to abandon their young when they sense danger. Some types will even do their best to protect their young when they are in danger.
Indeed, in very few known cases, parent birds sometimes abandoned their nests from something touching their young, just because they noticed it by sight, not smell. When this happens, the parent birds usually won’t care, other than to be a little more careful than normal. Sometimes, they may temporarily (暂时地) abandon the nest in order to better watch whatever disturbed their nest comes back.
What’s more, in most cases, even if the nest is destroyed by wind or something to that effect, you could create a new one and put all the baby birds back in it, and when the parents came back, they wouldn't care their baby birds were in a different nest, so long as you put the new nest near where the old one was so they can find it.
(1)Which of the following is true?
A.Birds have a very good sense of smell.
B.A baby bird will die soon if it is touched by someone.
C.Whatever disturbed the nest will never come back.
D.Some birds will protect their babies when they are in danger.
(2)What does the underlined word "it" in Paragraph 3 refer to?
A.Their nest. B.Their baby.
C.Some birds abandoning their nests. D.Something touching their young.
(3)The parent birds ______if we make a new nest for baby birds to take the place of the old one.
A.will never come back
B.will worry about their babies
C.won't mind
D.will take their babies away
(4)Which of the following shows the structure(结构)of the passage?
(①=Paragraph 1(第一段), ②=Paragraph 2…)
A.
B.
C.
D.
(5)What is the best title of this passage?
A.Bird Truth B．Baby Birds C．Bird Nests D．Bird Smell
