About 500 million birds migrate each year from Africa, some weighing as little as nine grams. To complete a voyage that can be thousands of kilometres long, birds have to fatten themselves up to twice their normal weight. Some even shrink (收缩) their internal organs (内脏) to become more fuel­efficient, so any additional distance may be dangerous.

　　The study, which is published in a journal, finds that from 2071 to 2100, 9 out of 17 species examined are going to face longer migrations, particularly birds that cross the Sahara Desert. Some birds traverse the Sahara and the Mediterranean Sea in one go, while others have a break in northern Africa before crossing. Many fly at night, when temperatures are cooler.

　　A few birds - such as the Blackcap - have started to adapt by spending winters in Britain, but such behaviour is rare, the study says. The study predicts that the migration distance of the Orphean Warbler will jump from 2，700 kilometres to between 3，050 and 3，350 kilometres, with even longer increases for the Subalpine and Barred Warblers.

　　5．Some birds migrate to Europe from Africa to ________．

　　A．find food and suitable habitats

　　B．avoid being caught by hunters

　　C．build new homes for their babies

　　D．escape from the crowded Africa

　　6．To complete the marathon migrations, some birds have to do all of the following things EXCEPT ________．

　　A．becoming smaller

　　B．putting on more weight

　　C．reducing the size of their internal organs

　　D．flying at night when temperatures are cooler

　　7．Which of the following statements is TRUE according to the passage?

　　A．About 500 million birds migrate each year from Africa.

　　B．9 out of 17 bird species examined will face longer migrations in the next decade.

　　C．Most birds have started to spend winters in Britain except for the Blackcap.

　　D．The migration distance of the Subalpine and Barred Warblers will increase by 650 kilometres.

　　8．The underlined word "traverse" in the fourth paragraph probably means "________"．

　　A．live in　　　　　　　B．leave for

　　C．cross D．visit

　　Ⅳ.短文改错

　　Not only does our parents give us life, but they give us endless love and support, and always share with our happiness and sorrow. I'm very grateful to my parent who give me so much love and spare no effort to support myself. I still remember once I was seriously ill, and they were so worried and almost keep me company the whole night. Now I'm in Senior 3. Lucky enough, my parents can understand my stressful condition but often encourage me. However, they give me enough personally space, which I appreciate so much. What I should do now is studying hard. When I grow up, I will try my best to make my parents live happy life.

　　课下能力提升(十一)

　　Ⅰ.1.seated　2.is　3.walking　4.were; was 5．go　6.is　7.to walk　8.are　9.is

　　Ⅱ.1.to take charge of the project　2.heard from him; did I hear of him　3.is a kind of popular food　4.were ready to help me

5．left me thinking