If you are lucky enough, you may find the hummingbird (蜂鸟), the smallest bird of the animal world, in a south American forest.

Though the hummingbird is no bigger than a bee and weighs only 2 to 3 grams, it can fly as fast as 50 meters in a second. It can fly forwards (向前) as most birds do, and it can fly backwards as well. The strangest thing about it, however, is that it can stay still in the air, just like a helicopter.

Whenever a hummingbird needs food, it will fly slowly towards a flower. It won’t stand on the flower, as bees do, but just hangs to the flower and then begins to sunk (吸吮) the honey from inside the flower with its needle-like beak.

The hummingbird is very particular in building its nest (巢). It takes great trouble to choose materials. It likes soft ones better than hard ones. Its eggs are so small that a common match box can hold as many as one hundred of them.

1.Most of the hummingbirds live in a(n) __________ forest.

A. north American B. south Asian

C. north Asian D. south American

2.A hummingbird can fly as fast as _______ meters in a second.

A. fifty B. five hundred

C. fifteen D. one hundred and fifty

3.The underlined word “helicopter” most probably means _______.

A.轮船 B. 公共汽车 C. 火车 D. 直升飞机

4.When a hummingbird builds a nest, it likes better.

A. soft materials B. hard materials

C. an material D. both

5.Which of the sentences is NOT true?

A. A hummingbird can even fly backwards.

B. You cannot see the wings of a hummingbird move.

C. A hummingbird will fly quickly towards a flower when it’s hungry.

D. A common match box can hold as many as one hundred hummingbird eggs.

Language students often think they have memory problems. They worry because they can’t remember words. In fact, the problem usually isn’t with their memory. The problem is with how they study.

To remember words better, you need to understand how memory works. There are two kinds of memory: short-term and long-term. When you see, hear, or read something, it goes first into short-term memory. But short-term memory lasts for only a few seconds. You will only remember something longer if it goes into long-term memory. Your long-term memory is like a very big library with many, many books. And like a library, it’s organized (有条理的). When you put away a book or memory you can’t just leave it anywhere. You have to choose a place where you can find it again.

How can you do this with vocabulary? The answer is to work with the word and think about the word in new ways. You can do this by writing new sentences that include it. Even better, you can invent a little story about the word, with people or places that you know. Another way is to make a picture in your mind with the word. For example, if the word is height, you can think of the tallest person you know and try to guess his or her height. All of these activities are good ways to think about words. They make the meaning of words stronger in your long-term memory. And they give a way to find a word when you need it.

1.In the writer’s opinion, students can’t remember words because _______.

A. they have memory problems

B. they are too worried

C. they don’t use a proper way

D. they don’t like to study

2.Which is TRUE about memory according to the passage?

A. Short-term memory is seldom used.

B. What we see goes into long-term memory first.

C. We will forget a word soon if it goes into short-term memory.

D. We will never forget a word if it goes into long-term memory.

3.The underlined (划线的) part in Paragraph 2 means long-term memory _______.

A. keeps many books like a large library

B. works like a well-organized library

C. provides any book you want

D. leaves memory anywhere

4.Which is one example of “thinking about the word in new ways” in Paragraph 3?

A. Making sentences with the word.

B. Listening to some familiar stories.

C. Talking with people that you know.

D. Drawing pictures of the word on paper.

5.This passage mainly tells us about _______.

A. language students’ problems in study

B. how to make the meaning of words stronger

C. short-term and long-term memory

D. how to improve ways to remember words

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