Ruler

A ruler is a very useful tool. It can measure (測(cè)量) the length of something. There are many different kinds of rulers. Rulers are made of plastic, wood, cloth, and so on. We use a plastic ruler in the classroom. Rulers also come in different length. There are 15 cm rulers, 1m rulers and even longer rulers. Rulers were first made in the 1800s.

Quarter

A quarter is an American or Canadian coin (硬幣). How much is a quarter? A quarter is 25 cents. It is 1/4 of a dollar. The first quarter was made in 1796 in America.

Do you know that it cots 7.33 cents to make one quarter?

Equal Sign (等號(hào))

Do you like maths? You probably saw an equal sign in maths. The equal sign is a symbol in maths. It is used to show that things are the same. It was first made by Robert Recorde in 1557.

How do you read “10+10=20”? It is read as “Ten plus ten equals twenty”.

Cup

A cup is a kind of unit. It is used to measure how much something holds. One cup is equal to 8 ounces (盎司). It is used in the US and Japan. However, in other countries people use different cups. We can measure salt, milk, juice, sugar and butter with a cup. It is very useful when cooking.

1.Rulers were first made ________.

A. in the 1800s B. in 1796 C. in 1557

2.How much is a quarter?

A. 7.33 cents. B. 25 cents. C. 15 cents.

3.From the passage, we can learn _______.

A. rulers are very long

B. a quarter is usual in many countries

C. a cup is probably used when making a cake

4.Which subject is connected with a ruler, a quarter, the equal sign and a cup?

A. Geography. B. Maths. C. Chinese.

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