B3 Unit6 Disaster and hopeI.单句语法填空1.He hurt his leg while (ride) a horse during the holiday.2.If (burn), rubber can give off poisonous gas.3.The young soldier lay there still, as if (die)．4.He opened his lips as if (say) something but he didn't.5.English words are easily forgotten unless constantly (repeat)．6.If he says he will come to your birthday party, he ．7.He spent more money than his parents (expect)．8.We are looking for someone who is (rely) and hard-working.9.She (grab) the child's hand and ran.10.Although (tell) to stop, he kept on working.II.把下面句子变为省略句1.She was poor but she was honest.→She was poor but ______.2.—What do you think made Mary so upset?—Losing her new bicycle made Mary so upset.→—What do you think made Mary so upset?—____________________.3.When it is seen from the plane, the houses look like tiny toys.→__________________, the houses look like tiny toys.4.—Alice, why didn’t you come yesterday?—I was going to come yesterday, but I had an unexpected visitor.→—Alice, why didn’t you come yesterday?—I ___________, but I had an unexpected visitor.5.The man that/who/whom you visited last night is my grandpa.→The man __________last night is my grandpa.6.My parents encouraged me to go to college, but I didn’t want to go to college. →My parents encouraged me to go to college, but I _____________.7.—Do you think he is a good student? —I don’t think he is a good student. →—Do you think he is a good student? —I ________.8.I heard her sing last night.→She _____________last night.9.If you are accepted for the job, you’ll be informed soon.→If for the job, you’ll be informed soon.10.Video games can be a poor influence if it is left in the wrong hands.→Video games can be a poor influence if in the wrong hands.II.阅读理解AThe African elephant, the largest land animal remaining on earth, is of great importance to African ecosystem. Unlike other animals, the African elephant is to a great extent the builder of its environment. As a big plant­eater, it largely shapes the forest­and­savanna(大草原) surroundings in which it lives, therefore setting the terms of existence for millions of other animals that live in its habitat.It is the elephant's great desire for food that makes it a disturber of the environment and an important builder of its habitat. In its continuous search for the 300 pounds of plants it must have every day, it kills small trees and under­bushes, and pulls branches off big trees. This results in numerous open spaces in both deep tropical forests and in the woodlands that cover part of the African savannas. In these open spaces are numerous plants in various stages of growth that attract a variety of other plant-eaters.Take the rainforests for example, in their natural state, the spreading branches overhead shut out sunlight and prevent the growth of plants on the forest floor. By pulling down trees and eating plants, elephants make open spaces, allowing new plants to grow on the forest floor. In such situations the forests become suitable for large hoofed plant ­eaters to move around and for small plant­eaters to get their food as well.What worries scientists now is that the African elephant has become an endangered species. If the elephant disappears, scientists say, many other animals will also disappear from vast areas of forest and savanna, greatly changing and worsening the whole ecosystem.1.What does the underlined phrase “setting the terms” most probably mean?A.Improving the quality.B.Worsening the state.C.Fixing the time.D.Deciding the conditions.2.The passage is developed mainly by ．A.showing the effect and then explaining the causesB.giving examplesC.pointing out similarities and differencesD.describing the changes in time order3.What is the passage mainly about?A.Forests and savannas as habitats for African elephants.B.The eating habit of African elephants.C.Disappearance of African elephants.D.The effect of African elephants' search for food.4.What do we know about the open spaces in the passage?A.They are home to many endangered animals.B.They result from the destruction of rainforests.C.They are attractive to plant­eating animals of different kinds.D.They provide food mainly for African elephants.BIn the 1950s, a family who owned a farm near Beulah, Michigan kept a bull chained to an elm(榆树). The bull paced around the tree, dragging the heavy iron chain, which led to a groove(槽)in the bark. The groove deepened over the years, though for whatever reason, it did not kill the tree.After some years, the family took their bull away. They cut the chain, leaving the loop(圈)around the tree and one link hanging down.Then one year, agricultural disaster struck Michigan in the form of Dutch Elm Disease. All of the elms lining the road leading to the farm became infected and died. Everyone thought that the old elm would be next.The farm's owners considered doing the safe thing: pulling it out and cutting it up into firewood before it died. But they simply could not bring themselves to do it. It was as if the old tree had become a family friend. So they decided to let nature take its course．Amazingly, the tree did not die. Nobody could understand why it was the only elm that was still standing in the country!Plant pathologists(病理学家)from Michigan State University came out to observe the tree. They observed the scar left by the iron chain, now almost completely covered by bark. The plant experts decided that it was the chain that saved the elm's life. They reasoned that the tree must have absorbed so much iron from the chain that it became immune to the fungus(真菌)．It's said that what doesn't kill you will make you stronger. Or, as Ernest Hemingway put it,“Life breaks us all, but afterwards, many of us are strongest at the broken places.”5.What happened to the elms in Michigan during the agricultural disaster?A.Nearly all of the elms died of a disease.B.Some of the elms were cut up into firewood.C.All the elms were infected by a disease and died.D.The elms were tied by iron chains.6.From the passage we can learn that the old elm was saved by ．A.the iron remaining in itB.the fungus in the treeC.the groove in the barkD.its own immune system7.The underlined sentence “let nature take its course” means “”．A.have nature give a lesson to the elmB.help the elm grow normallyC.let nature take the elm awayD.leave the elm at the mercy of nature8.What is the best title for the text?A.Never Lose Heart in TroubleB.Strike While the Iron Is HotC.Stronger after SufferingD.Brave to Face FailureIII.语法填空Once, a gentleman found a parrot in the woods. The parrot 1.(lie) on the ground, flapping(拍动) its wings. The gentleman walked to it. When he got close and looked at it, he found the parrot had got injured. The gentleman was so kind­hearted that he took it home.The parrot 2.(take) good care of at the gentleman's home. Some days later, the parrot recovered and could fly around again. But the parrot didn't go. Instead, it lived with the gentleman and learned such nice 3.(word) as “please” and “thank you”．About two years later, when the parrot was flying around the house, a kid 4.(pass) by caught it and took it home. The gentleman searched 5.it everywhere after noticing it was gone but failed to find it, 6.made the gentleman very sad.About half a year later, one day when the gentleman was walking in a neighborhood nearby, he heard 7.voice shouting, “You stupid thing. Go away.” The gentleman was 8. (surprise)．When he looked up, he found it was a parrot that was shouting at him. And when he looked 9. (careful), he recognized it was his missing parrot.Though it was his missing parrot, it had forgotten all 10.(it) good manners. It formed the habit of speaking dirty words just like the people living there.B3 Unit6 Disaster and hope练习学案22答案I.单句语法填空1.riding2.burnt3.dead4.to say5.repeated6. will7. had expected8.reliable9.grabbed 10.toldII.把下面句子变为省略句1.honest2.Losing her new bicycle3.Seen from the plane4.was going to5.you visited6.didn’t want to7. don’t think so/think not8. was heard to sing9. accepted 10. leftII.阅读理解A 【语篇解读】本文是一篇说明文。