1、Unit 2Period I Warming up, Pre-reading, Reading & Comprehending、用適當(dāng)?shù)亩陶Z完成句子（為 了方便起見），this application is also included with this article ina be downloaded.It is greatly （值得贊揚(yáng)）that you gave back the money you found. students （把分成）pairs and invite them to talkabout their own future hopes and plans.Trav

2、el gives us the chance to（擺脫） daily routine and experiencesomething new.My aunt often （提至（j） the things that she experienced when she worked in Shanghai.It is said that the special class （由組成）some gifted children.You should not（不考慮）the details before you are going abroad on a trip.My friend had a ch

3、ance to （至U去旅行）Hong Kong on January 1,2019.The two players are well matched,（rough） equal in ability.It is worthwhile （work） diligently （勤 奮士也）when you have your own goal.The report did not （clear） whether Mr. King mentioned his son when he made the comment.The national park has a large （collect） of

4、 wildlife, ranging from butterflies to elephants.He received a set of china（consist） of sixty pieces.二、Imagine putting a seed in a freezer, waiting 30, 000 years, and then takingthe seed out and planting it. Do you think a flower would grow?Amazingly, scientists have just managed to do something ver

5、y similar. They found the fruit of an ancient plant that had been frozen underground in Siberia一a region covering central and eastern Russia一for about 31, 800 years. Using pieces of the fruit, the scientists grew plants in a lab. The new blooms have delicate white petals. They are also the oldest fl

6、owering plants that researchers have ever revived from a deep freeze.“This is like regenerating a dinosaur from tissues of an ancient egg, said Jane Shen-Miller, a biologist of University of California, Los Angeles.The plant has a long history. Back when mammoths and woolly rhinoceroses walked on th

7、e land, an Arctic ground squirrel buried seeds and fruits in an underground chamber near the Kolyma River in northeastern Siberia. The ground became pennafrost, a layer of soil that stays frozen for a long time.Recently, Russian scientists dug out the old squirrel hole and found the plant remains 38

8、 meters below the surface. Back at the lab, the team fed nutrients to tissue from three of the fruits to grow shoots. Then the scientists transferred the shoots to pots filled with soil. The plants produced seeds that could be used to grow even more of them.It s important for scientists to know that

9、 plant tissues can still be revived after being frozen for a long time. That s because many researchers are trying to preserve the seeds of modem plants by freezing them and then storing them in giant lockers at various spots around the globe. One such endeavor, an underground facility in Norway, is

10、 called the Svalbard Global Seed Vault. It stores hundreds of thousands of frozen seeds. If a plant ever goes extinct, scientists could bring it back by taking its seeds from the Svalbard or other storage lockers.“No one knows how long they are able to live for, but freezing is basically the format

11、for many plant conservation attempts nowadays, Jane Shen-Miller said. It s a good thing that at least some plants are tough enough to survive in the experience.1.Which of the following was NOT used to recreate the ancient plant?Modem nutrients.Parts of the fruits.Its frozen seeds.Plant pots with soi

12、l.2.Why are scientists interested in this discovery?A.It helps them learn how plant life has changed in the past 30,000 years.B. It can help guide future efforts to protect endangered plants5 life.C.It can provide directions for where to look for other ancient plants.D.It proves that all plant life

13、can survive for thousands of years when frozen.3.The underlined word they， in the final paragraph refers to .A. plantsB.seedsC.scientistsD. storage lockersThe purpose of the passage is to .A.discuss a plant conservation effortintroduce some ancient plantsoutline some causes of global warmingdescribe

14、 a scientific research project三、根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最正確選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余 選項(xiàng)。If you think youve gained too much weight or are too skinny, you can talk to a doctor. Your doctor will tell you .If it is concerned about your height, weight, or BMI (體重指數(shù))，your doctor may ask questions Your doctor may. also

15、 ask about your familybackground to find out if you ve received something from your parents that might make you taller, shorter, or a late bloomer (someone who develops later than other people of the same age). The doctor can then put all the information together to decide.If your weight isn，t in a

16、healthy range, you will probably get specific diet and exercise recommendations based on your individual needs. Following a doctors or dietitian s plan designed especially for you will work much better than following fad (時(shí)尚)diets. For teens, fad diets or starvation plans can actually slow down grow

17、th, and the weight loss usually doesn，t last.What (4)? Most teens who weigh less than other teens of theirage are just fine. They may be going through puberty on a different schedule than kids of the same age, and their bodies may be growing and changing at a different rate. Most underweight teens c

18、atch up in weight as they finish puberty during their later teen years so there, s rarely a need to try to gain weight.In a few cases, teenagers can be underweight because of a health problem that needs treatment. If you feel tired or ill a lot, or ,or otherproblems that have lasted for more than a

19、week or two, be sure to let your parents or your doctor know.whether you might have a weight or growth problemif you have symptoms like a cough, stomachacheabout your health, physical activity, and eating habitsif youve worried about being too skinnyif you take care of itF.whether you re growing nor

20、mallyG. about your dieting答案以及解析一、答案:1. For your convenience;2. to your credit; 3. Divide; into; 4. break away from;5. refers to; 6.consists of/is made up of;7. leave out; 8. make a trip to解析：.答案：roughly解析：考查副詞。句意:這兩個(gè)運(yùn)發(fā)動(dòng)勢均力敵，在能力上大致相同?？崭窈蟮膃qual是形 容詞，修飾形容詞應(yīng)用副詞,roughly表示大致,差不多”。.答案：1 .客觀填空 working/to work解析：考查非謂語動(dòng)詞。句意：當(dāng)你有自己的目標(biāo)時(shí)，勤奮工