Antifreeze is a liquid(液体) that is added to water to keep it from freezing． When water freezes and turns to ice，it expands(膨胀)．The force of water expanding is so great that it will break the hardest metal．Water is used in car engines(发动机) to keep them cool while they run，and if this water is allowed to freeze in winter it can break the iron block of the engine．That is why antifreeze is necessary．
Water freezes at 0℃；the usual kind of antifreeze will not freeze until the temperature is－40℃．A mixture(混合物) of five parts of water and four parts of antifreeze will prevent freezing at－18℃；four parts of water and five parts of antifreeze reduce this to －22℃．
Alcohol is a kind of good antifreeze，but when the air is running it becomes hot and the alcohol boils away，so it must be changed very often．Most people use antifreeze that does not boil away when the engine is running．There are several chemicals that do this．One of the most popular is called ethylene glycol．
【小题1】people use ________ to keep car engines cool．

Last weekend, when Jack was walking in the park, he saw a woman, who lived a few miles away, sitting on a bench with a dog beside her. The dog was looking up at the woman.

Jack walked up to the woman and said, “Hello, Sue, how are you? May I sit and talk with you for a while?”

“Of course, please sit down,” Sue said.

Jack sat down next to Sue on the bench, and they talked quietly together. The dog continued to look up at Sue, as if waiting to be fed. “That’s a nice dog, isn’t he?” Jack said, pointing at the animal.

“Yes, he is. He’s handsome. He’s a bit of a mixture, but that’s not a bad thing. He’s strong and healthy.”

“And hungry,” Jack said. “He hasn’t taken his eyes off you. He thinks you’ve got some food for him.”

“That’s true,” Sue said. “But I haven’t.”

They both laughed and then Jack said, “Does your dog bite?”

“No,” Sue said. “He’s never bitten anyone. He’s always gentle and friendly.”

Hearing this, Jack decided to hold out his hand and touched the animal’s head. Suddenly it jumped up and bit him.

“Hey!” Jack shouted. “You said your dog didn’t bite.”

Sue replied in surprise. “Yeah, I did. But this is not my dog. My dog’s at home.”

1. Jack and Sue were ______.

A. friends                                                   B. next—door neighbours            C. strangers

2. The dog looked at the woman because ______.

A. the woman wanted to feed him     B. the woman was friendly          C. it was hungry

3. Jack touched to dog because he believed ______.

A. the dog was handsome    B. Sue’s dog was unfriendly     C. the dog belonged to Sue

4.Do Sue’s dog bite?

A. Yes, it does.                                         B. No, it doesn’t.                            C. We don’t know.

5.Which of the following can be the best title of the passage?

A. A Wrong Question                             B. Sue’s Dog                                     C. A Pleasant Meeting

   One day when Jack was walking inthe park, he saw a woman he knew sitting on a bench(长椅)with a dog beside her. The dog was looking up at the woman.

   Jack walked up to the woman and said, “Hello. Sue, how are you? May I sit and talk with you for a while?”

“Of course, please sit down,”Sue said.

Jack sat down next to Sue on the bench, and they talked quietly together.

The dog continued to look up at Sue, as if waiting to be fed.

    “That's a nice dog”Jack said, pointing(指向)at the animal.

    “Yes, he's handsome. He's a bit of a mixture(混合) but that's not a bad thing.

He's strong and healthy”

    “And hungry,” Jack said. “He hasn't taken his eyes off you. He thinks you've got

some food for him.”

     “That's true,”Sue said, But I haven’t.”

    The two friends laughed and then Jack said, “Does your dog bite?”

    “No,” Sue said. “He's never bitten anyone. He's always gentle and good-tempered

(好脾气).”

    Hearing this, Jack decided to pet the dog. He put out his hand and touched the

animal's head. Immediately it jumped up and bit him.

    “Hey!” Jack shouted. “You said he didn't bite.”

    “No, I didn't,”Sue replied.  “You asked，if my dog bit, and I said no.

51. What did Jack do when he saw the woman?

    A. He walked past her.

    B. He asked to sit next to her.

    C. He spoke angrily to her.

    D. He spoke to her dog.

52. The dog looked_________.

    A. angrily at Jack                          B. sick

    C. as if he would bite Sue                   D. hungry

53. Jack thought that the dog

    A. was ill                                B. belonged to Sue

    C. was terrible                            D. belonged in a zoo

54. The underlined word “pet” should be ______________in Chinese.

    A.宠物              B.喜欢

    C.敲打              D.抚摸

55. From the story, we can know______________.

    A. Jack and Sue talked about the same dog

    B. Jack asked Sue a right question

    C. Jack was bitten by Sue's dog

    D. Jack asked Sue a wrong question

Do you like eating chocolate? Companies spend millions of dollars on tools and machines to make chocolate. With a little ingredients, however, you can turn your kitchen into a chocolate factory. Today we will teach the Cocoa Powder （可可粉）Method（方法）, it is easier for beginners. Try it and make your own homemade chocolate.
Here are the ingredients (原料) you need:
cocoa powder — 2 cups (220g) ; butter — 3/4 cup (170g); sugar — 3/4 cup (100g); milk — 2/3 cup (150ml); salt — a little bit ; water — 1 cup (235ml).
Now, please follow these steps. First, mix the cocoa powder and butter in a bowl until you have a smooth paste (酱). Then , add the cocoa powder mixture (混合物)  to the hot water and stir（搅拌）. Allow the temperature to rise back up. Put the hot mixture into a bowl,  stir the sugar mixture into the hot cocoa mix. Add milk, stir until smooth. At last, put the mixture into different containers（容器）. The chocolate will take the shape of the container. You can put it in the fridge to harden（使变硬）it.
We hope you can enjoy your homemade chocolate.
【小题1】What is NOT necessary when we are making chocolate?