1、选择性必修四 Units 1-3 I. 用括号内单词的正确形式填空。1. I wont play football until my homework _ (finish).2. Its too noisy. A new house _ (build) behind our school.3. The man _ (see) running away from the scene of the crime just now.4. The subject of these lectures _ (announce) by the lecture committee tomorrow.5. Sci
2、entists _ (puzzle) until now by how turtles manage to swim across the Atlantic.6. The injured passengers _ (send) to hospital before the reporters arrived at the spot.II. 用括号内动词的正确形式完成下列短文。AUNDERWATER ODDITIESMost of the creatures 1. _ (live) in the sea have not yet been discovered. Butscientists kn
3、ow of more than 200,000 of them. These creatures have adapted to life underwater.Some are very unusual. Ready 2. _ (dive) in? Read on 3. _ (learn) about fourinteresting ocean creatures.KRILL (磷虾)Krill have see-through bodies. Their digestive systems are visible. That means you can see what a krill a
4、te for lunch!NARWHAL (独角鲸)A narwhal has a long, thin tusk on its head. The tusk is a giant tooth. Because of this tusk, narwhals are thought 4. _ (be) the unicorns (独角兽) of the sea.TIGER SHARKA tiger shark can turn its stomach inside out. 5. _ (do) this, the shark shoots its stomach out of its mouth
5、. This cleans out the stomach.PORCUPINE FISH (刺豚)A porcupine fish has stretchy skin. When 6. _ (see) an enemy, it takes in water and expands into a ball 7. _ (get) much bigger.BThere are ways to repair the damage 1. _ (cause) by plastic trash. Scientists aredeveloping biodegradable (微生物可分解的) materia
6、ls that can be used in medical devices andshopping bags. Scientists are getting ideas from nature and using natural designs 2. _(serve) various functions. For example, 3. _ (base) on the wing design of butterflies andnasturtium leaves, American engineers have created the most waterproof material in
7、the world.Usually, plastic products are employed 4. _ (coat) material to make it waterproof so thisis a breakthrough.In addition, a foundation 5. _ (name) “The Ocean Clean Up” is developingtechnology that will not only clean up the plastic in the oceans but will also prevent plastic from 6._ (get) i
8、nto the environment.Many major stores have started charging for plastic bags. Others have switched tobiodegradable grocery bags. This is a start but much more must be done 7. _ (stop) theuse of plastic. There is a new concept 8. _ (call) “packaging-free grocery shopping” thatis slowly becoming more
9、9. _ (appeal) but it has not caught on much yet.Through tireless efforts, there is a growing awareness and a sense of urgency 10. _(cut) down on the use of plastic and switch to environmentally-friendly products. Just by cuttingdown on our use of plastics at home, and in our daily life, we can signi
10、ficantly reduce the amountof plastic trash 11. _ (go) into the ocean.As they say, “Every little bit counts”, so please make it your mission in life 12. _(say) “NO” to plastic!CThings to do on the Great Ocean RoadMeet the wildlifeThe Great Ocean Road is home to a lot of native wildlife. At Tower Hill
11、 Wildlife Reserve,you can take a 60-minute tour with an Aboriginal guide who will explain the history of this uniquearea as you spot kangaroos, koalas and lizards. Join a Seals by Sea tour 1. _ (see)hundreds of fur seals at Cape Bridgewater. See koalas in the wild at Kennett River and in theGreat Ot
12、way National Park. For something completely different, canoe ( 划 独 木 舟 ) on LakeElizabeth on a(n) 2. _ (guide) tour at dawn.Experience Australias aboriginal cultureAboriginal stories connect the landscapes of the Great Ocean Road from Wathaurong countryin Geelong to the Gunditjmara region of the wes
13、t. Learn about ancient remedies (疗法) and heardidgeridoo 3. _ (play) at the Narana Aboriginal Cultural Centre in Geelong. Visit theBrambuk Cultural Centre in Halls Gap 4. _ (appreciate) fascinating displays of art andjoin a tour 5. _ (visit) some rock art sites 6. _ (date) back 22,000 years in theGra
14、mpians National Park.III. 阅读下列短文，在空白处填入 1 个适当的单词或括号内单词的正确形式。ATroops of mini 1. _ (walk) robots have been created that could enable 2. _(science) exploration at a microscopic level.People have made microscopic robots before, but these havent been able to move by 3._ (them), says Marc Miskin at the Un
15、iversity of Pennsylvania. That is partly because 4._ a lack of small enough actuators (驱动器), 5. _ are required for movement,such as bending a leg. Miskin and his colleagues have developed an actuator made of a thin layerof platinum (铂). The robots have four tiny actuators as legs, each 6. _ (connect
16、) to adifferent solar cell on the back. This enables the legs to bend if the solar cells are hit by laser (激光) light 7. _ makes the square metallic bodies forwards.Miskin and his team made 8. _ (many) than a million microrobots, each of which issmaller than a(n) 9. _ (ten) of a millimetre and only v
17、isible under a microscope.The robots are small enough 10. _ (put) into bodies and are made frombiocompatible (生物相容性的) materials, so could potentially wander inside the human body.BThe Palouse is becoming famous 1. _ biking with 35 miles of bike paths, full-onsingle track mountain biking, and some gr
18、eat hilly low traffic road riding.Palouse Falls State ParkAs Washington States Official Waterfall, Palouse Falls drops from a(n) 2. _ (high)of 198 feet with high volumes of water flow in spring and early summer. Palouse Falls State Parkis a 105-acre camping park with unique geology (地 质 ). The park
19、provides a(n) 3. _(drama) view of one of the states most beautiful waterfalls.Codger Pole (怪人柱)The Codger Pole, a 65-foot-tall sculpture, is in memory of a 1988 high school footballrematch 4. _ (play) fifty years after the first game, by 5. _ same participants.Colfax lost to St. John in 1938, but wo
20、n the rematch.Steptoe Butte (史特托小丘)High above the Palouse Hills, Steptoe Butte 6. _ (offer) extraordinary views of alandscape. The warm quartzite bluff (石英石悬崖) stands out against soft hills of green and palepurple, an occasional barn (谷 仓 ) 7. _ (dot) the landscape. Colors seem 8. _(shift) and chang
21、e in the light.Dahmen Barn Wheel FenceOn US-195 near Uniontown, youll see a typical wheel fence surrounding a grand white barn.It 9. _ (use) for a commercial dairy operation until 1953, in 10. _ it was changedinto an artisan workshop and gallery.答案I.1. is finished 2. is being built3. was seen 4. wil
22、l be announced5. have been puzzled 6. had been sentII.A.1. living 2. to dive3. to learn 4. to be5. To do 6. seeing7. to getB.1. caused 2. to serve3. based 4. to coat5. named 6. getting7. to stop 8. called9. appealing 10. to cut11. going 12. to sayC.1. to see 2. guided3. played 4. to appreciate5. to visit 6. datingIII.A.1. walking 2. scientific3. themselves 4. of5. which 6. connected7. and 8. more9. tenth 10. to be putB.1. for 2. height3. dramatic 4. played5. the 6. offers7. dotting 8. to shift9. had been used 10. which学科网（北京）股份有限公司
