4、It’s said that someone somewhere in the world is always eating sushi（壽司）. It’s the healthy snack of choice for people of all cultures .

The first sushi was actually made in China in the 2^nd century. Raw salted fish was eaten with rice. Like writing , Japanese traveled to China and took sushi back to Japan . In the middle of the 17^th century , vinegar was added to the rice to make it tastier. Since the late 20^th century raw fish on small amounts of rice has become big business .

There are different recipes (食譜) for making sushi. This one is really easy and fun. Try it !

Ingredients

200 grams of raw salmon (大馬哈魚(yú)) in one piece (other raw fish like tuna is fine)

2 cups of rice

2 cups of water

1/2 cups of vinegar

1 teaspoon of salt

2 tablespoons of sugar

Wasabi*

Japanese soy sauce (醬油)

Instructions

（1） Wash your hands before you start.

（2） Put the sugar and salt in the vinegar .Keep it in a container.

（3） Boil the rice in the 2 cups of water. This is a little less water than usual to make        the rice slightly harder .

（4） Leave the rice to cool down for 10 minutes after it’s boiled.

（5） Put the rice into a large container. Add half of the vinegar.

（6） Mix it all together with your hands. Keep mixing until it sticks together. You may need to add more of the vinegar.

（7） Let the rice cool down.

（8） Wet your hands. Make balls of rice. Each one should be about the size of a table tennis ball.

（9） Take a sharp knife and cut the salmon into thin slices. Each slice should be about 3mm thick.

（10） With the rice ball in one hand, press the cut salmon on top. Make it into a rectangular shape .

（11） Put the sushi on a plate.

（12） Put a little wasabi and soy sauce in a small dish.

（13） Serve the sushi to your friends. It goes well with green tea.

   The biggest concern people have about sushi is its freshness. Raw fish can attract bacteria, which can makes us ill or even cause death. When choosing a whole fish , the eyes should be clear. The skin should be bright and smooth and not breaking-up. When choosing cut fish , the meat ought not to give off an unpleasant smell. It should also ‘bounce back’ at you when you touch it. In other words , it should look fairly hard. Don’t buy sushi in the street. Buy from shops or supermarkets that others can recommend .

   Lots of wasabi also helps kill bacteria. It also makes your head want to explode.

 

49. To make sushi more delicious , you may as well ___ .

  A. pour some green tea into rice  

  B. add a bit more vinegar to rice

  C. eat as much wasabi as possible to kill bacteria

  D. choose steamed fish rather than fish that are uncooked

50. There are signs of freshness of fish except___ .

  A. firm flesh   B. clear eyes   C. smelly meat   D. shiny skin

51. What does this passage mainly discuss ?

  A. Cooking at home             B. popular Japanese fast food

  C. Making your own sushi   D. the development of sushi

52. We can infer from the passage that ____ .

A.      Sushi has become a multi- billion industry

B.      Making sushi is a demanding job for every one

C.      Sushi is more popular in China than in Japan

D.     You should buy sushi in shops or supermarkets only on people’s recommendation