3、China could save 10 million tons of grain a year if more attention was paid to the control of pests(害虫) , an agricultural scientist said. He also warned that plant diseases and pests are on the increase. Many kinds of pests, such as Asian locusts, which had been controlled for years, are spreading again. He said China loses about 15 million tons of grain a year as a result of damage done by plant diseases and pests. If crops were better protected, at least half of the lost grain could be save D He called for setting up a national office in charge of biological control using pests＇ natural enemies to kill them. Biological control is now used on slightly more than 10 percent of farmland of the country. The scientist＇s warning is that ____ .

2. Alfred Nobel, the great Swedish inventor and industrialist, was born in Stockholm on October 21, 1833, but moved to Russia with his parents in 1842, where his father, Immanuel, made a strong position for himself in the engineering industry. Immanuel Nobel invented landmine and made a lot of money from the government during the Crimean War, but went bankrupt soon after. Then, the family returned to Sweden in 1859, where Alfred began his own study of explosives in his father’s lab. He had never been to school or university but had taught himself, and by the time he was twenty, he became a skillful chemist and excellent linguist, speaking Swedish, Russian, German, French and English. He built up over 80 companies in 20 different countries. He was always searching for a meaning to life. He spent much time and money working on how to end the wars, and the peace between nations, until his death in Italy in 1896. His famous last will, in which he left money to provide prizes for outstanding work in physics, chemistry, physiology, medicine, literature and peace, is a memorial to his interests and ideas. And so, the man is remembered and respected long after his death. What did Immanuel Nobel invent during the Crimean War?

1. Alfred Nobel, the great Swedish inventor and industrialist, was born in Stockholm on October 21, 1833, but moved to Russia with his parents in 1842, where his father, Immanuel, made a strong position for himself in the engineering industry. Immanuel Nobel invented landmine and made a lot of money from the government during the Crimean War, but went bankrupt soon after. Then, the family returned to Sweden in 1859, where Alfred began his own study of explosives in his father’s lab. He had never been to school or university but had taught himself, and by the time he was twenty, he became a skillful chemist and excellent linguist, speaking Swedish, Russian, German, French and English. He built up over 80 companies in 20 different countries. He was always searching for a meaning to life. He spent much time and money working on how to end the wars, and the peace between nations, until his death in Italy in 1896. His famous last will, in which he left money to provide prizes for outstanding work in physics, chemistry, physiology, medicine, literature and peace, is a memorial to his interests and ideas. And so, the man is remembered and respected long after his death. Where was Alfred Nobel born? He was born in ________.

5. Shlander is a man from space. He thinks the people and things on the earth are very strange. He is now writing a letter to his friend at home. Here is part of his letter. Read it and answer the questions. Now I am in a strange world. It is very nice. There are many new things here. There are many earth monsters here, too. The earth monsters look very funny. They have just one head, two arms and two legs. They have thin black strings on their heads. Some earth monsters have brown or yellow strings. The earth monsters have a hole in their face. Every day, they put nice things and balls from the trees into the hole. They put water into the hole, too. The earth monsters do not walk very fast. They move from place to pace in tin boxes. At night, the earth monsters like to look at a square window box. This box has very small earth monsters in it. The square window box is ________.

4. Shlander is a man from space. He thinks the people and things on the earth are very strange. He is now writing a letter to his friend at home. Here is part of his letter. Read it and answer the questions. Now I am in a strange world. It is very nice. There are many new things here. There are many earth monsters here, too. The earth monsters look very funny. They have just one head, two arms and two legs. They have thin black strings on their heads. Some earth monsters have brown or yellow strings. The earth monsters have a hole in their face. Every day, they put nice things and balls from the trees into the hole. They put water into the hole, too. The earth monsters do not walk very fast. They move from place to pace in tin boxes. At night, the earth monsters like to look at a square window box. This box has very small earth monsters in it. The earth monsters don’t put ________ on their holes.

3. Shlander is a man from space. He thinks the people and things on the earth are very strange. He is now writing a letter to his friend at home. Here is part of his letter. Read it and answer the questions. Now I am in a strange world. It is very nice. There are many new things here. There are many earth monsters here, too. The earth monsters look very funny. They have just one head, two arms and two legs. They have thin black strings on their heads. Some earth monsters have brown or yellow strings. The earth monsters have a hole in their face. Every day, they put nice things and balls from the trees into the hole. They put water into the hole, too. The earth monsters do not walk very fast. They move from place to pace in tin boxes. At night, the earth monsters like to look at a square window box. This box has very small earth monsters in it. The earth monster doesn’t have ________.

2. Shlander is a man from space. He thinks the people and things on the earth are very strange. He is now writing a letter to his friend at home. Here is part of his letter. Read it and answer the questions. Now I am in a strange world. It is very nice. There are many new things here. There are many earth monsters here, too. The earth monsters look very funny. They have just one head, two arms and two legs. They have thin black strings on their heads. Some earth monsters have brown or yellow strings. The earth monsters have a hole in their face. Every day, they put nice things and balls from the trees into the hole. They put water into the hole, too. The earth monsters do not walk very fast. They move from place to pace in tin boxes. At night, the earth monsters like to look at a square window box. This box has very small earth monsters in it. Shlander thinks man on the earth is ________.

1. Shlander is a man from space. He thinks the people and things on the earth are very strange. He is now writing a letter to his friend at home. Here is part of his letter. Read it and answer the questions. Now I am in a strange world. It is very nice. There are many new things here. There are many earth monsters here, too. The earth monsters look very funny. They have just one head, two arms and two legs. They have thin black strings on their heads. Some earth monsters have brown or yellow strings. The earth monsters have a hole in their face. Every day, they put nice things and balls from the trees into the hole. They put water into the hole, too. The earth monsters do not walk very fast. They move from place to pace in tin boxes. At night, the earth monsters like to look at a square window box. This box has very small earth monsters in it. Shlander thinks the people and things on the earth are very ________.

5. We know the mosquito very well. Mosquitoes fly everywhere. They can be found almost all over the world, and there are more than 2,500 kinds of them. No one likes the mosquito. But the mosquito may decide that she loves you. She? Yes, she. It’s true that male mosquito doesn’t bite(咬) and only the female mosquito bites because she needs blood to lay eggs. She is always looking for things or people she wants to bite. If she likes what she finds, she bites. But if she doesn’t like your blood, she will turn to someone else for more delicious blood. Next time a mosquito bites you, just remember you are chosen. You’re different from the others!If the mosquito likes you, she lands on your body without letting you know. She bites you so quickly and quietly that you may not feel anything different. After she bites, you will have an itch(痒) on your body because she puts something from her mouth together with your blood By the time the itching begins, and she has flown away. And then what happens? Well, after her delicious dinner, the mosquito feels tired She just wants to find a place to have a good rest. There, on a leaf or a wall, she begins to lay eggs, hundreds of eggs. Which of the following sentences is wrong?

4. We know the mosquito very well. Mosquitoes fly everywhere. They can be found almost all over the world, and there are more than 2,500 kinds of them. No one likes the mosquito. But the mosquito may decide that she loves you. She? Yes, she. It’s true that male mosquito doesn’t bite(咬) and only the female mosquito bites because she needs blood to lay eggs. She is always looking for things or people she wants to bite. If she likes what she finds, she bites. But if she doesn’t like your blood, she will turn to someone else for more delicious blood. Next time a mosquito bites you, just remember you are chosen. You’re different from the others!If the mosquito likes you, she lands on your body without letting you know. She bites you so quickly and quietly that you may not feel anything different. After she bites, you will have an itch(痒) on your body because she puts something from her mouth together with your blood By the time the itching begins, and she has flown away. And then what happens? Well, after her delicious dinner, the mosquito feels tired She just wants to find a place to have a good rest. There, on a leaf or a wall, she begins to lay eggs, hundreds of eggs. The mosquito bites you _________.

3. We know the mosquito very well. Mosquitoes fly everywhere. They can be found almost all over the world, and there are more than 2,500 kinds of them. No one likes the mosquito. But the mosquito may decide that she loves you. She? Yes, she. It’s true that male mosquito doesn’t bite(咬) and only the female mosquito bites because she needs blood to lay eggs. She is always looking for things or people she wants to bite. If she likes what she finds, she bites. But if she doesn’t like your blood, she will turn to someone else for more delicious blood. Next time a mosquito bites you, just remember you are chosen. You’re different from the others!If the mosquito likes you, she lands on your body without letting you know. She bites you so quickly and quietly that you may not feel anything different. After she bites, you will have an itch(痒) on your body because she puts something from her mouth together with your blood By the time the itching begins, and she has flown away. And then what happens? Well, after her delicious dinner, the mosquito feels tired She just wants to find a place to have a good rest. There, on a leaf or a wall, she begins to lay eggs, hundreds of eggs. If the mosquito doesn’t bite you, it will ________.