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1、Unit 21 Human Biology Period One Warmup & Lesson 1 课时精练（北师大版选修7，广东专用）时间：45分钟.完形填空阅读下面短文，掌握其大意，然后从各题所给的A、B、C和D项中，选出最佳选项。If its possible to see red (get angry)about not seeing red，that is what I was doing.We had _1_the time of our autumn trip to see the changing _2_in the Great Lakes States，and I was
2、really_3_.No matter how I strained my eyes I couldnt spot red anywhere.Not even a bit of golden yellow broke through the dull greenery.This vacation was a complete _4_.I sat alone in the backseat of our rented car and got _5_as we drove north through the dull，dark green.In the front seat my brother
3、and my father chatted merrily，obviously _6_.Then a motto came to mind：“Happiness is a decision.”It must have been something my mother said.She was always passing on words of _7_.When I was a child，she gave me a black book with _8_pages.On the flyleaf she had written，“Look for a beautiful thing and y
4、oull find it.”I was supposed to keep a record of the most beautiful thing I saw each day.I remembered spending hours discussing what Id _9_.A babys smile？A stone shining with fools gold？Pictures in the clouds，or tulips tipping their heads？I found so many beautiful things that it was _10_to pick just
5、 one.Now，on the road，I played Mothers game again.I took in the allgreen _11_.Thick forests lined both sides of the highway.The long hill pines and spruce were seen everywhere.Maple leaves danced in the gentle wind.I felt like a little girl again_12_by beautiful things.Later in the trip，after we cros
6、sed the Upper Peninsula and drove into Canada，I found the bright_13_plants I had been looking for.But by then Id already seen a million shades of _14_，the infinite variety and beauty that only our heavenly Father can _15_.And that we can always findif we look closely enough.【解题导语】 本文是一篇抒情散文，作者要看红色的景
7、色，却到处是绿色的海洋。妈妈的劝告改变了她原有的想法，结果发现人世间一切都是美好的。1A.kept BmissedCmisjudged Dseized答案C从本段首句和最后两句可知我错误地估计了看秋天红叶的时间。2A.situation Bweather Cplants Dleaves答案D全文都是围绕着看红叶这一中心而展开的议论。3A.upset Bexcited Chappy Dsorry答案A由于没看到红叶，心里很不舒服。4A.success Btime Cwaste Dpleasure答案C由于没看到红叶，感觉这次假期全被浪费了。5A.sleepy Bmad Cpatient Dang
8、ry答案D“我”独自坐在租来的汽车后座上，由于眼前一片绿色，心里十分气愤。6A.unconcerned BdisappointedCworried Dsurprised答案A父子两人很高兴地聊天，明显不顾及“我”的感受。7A.order Badvice Capology Dhelp答案B从下文母亲在本子扉页上写的话可知，她总是给我些建议。8A.nice Bcommon Cmissing Dempty答案D从下文母亲要“我”每天记下看到的最美事物可知，这是一本空白本子。9A.brought in Bwritten downCgot through Dreferred to答案B从下文陈述的看到的
9、东西可知，“我”花时间讨论自己记下的东西。10A.impossible BvaluableCnecessary Dstrange答案A由于美的东西太多了，“我”感到只选出一件事是不可能的。11A.forests Bleaves Chills Dscenery答案D下文列举的forests，hill pines，spruce and maple leaves等都是景色。12A.wondered BsurroundedCwaken Dtreated答案B被美丽的事物所包围。13A.leaf Bhill Chighway Dfall答案D文章一开始就告诉我们，“我”旅游的目的就是看秋天的红叶，所以，
10、这里指“我”最终找到了一直寻找的秋天的植物。14A.red Btrees Cgreen Dplants答案C这里指“我”已经看过一片绿色的海洋。15A.observe Bproduce Cfind Dprovide答案B这里指那是只有我们祖先才能创造出的无穷无尽的美。.阅读理解Canyonlands National ParkCanyonlands National Park is a famous tourist attraction in Utah where visitors can see arches(拱门)and other beautiful rock formations.Ca
11、nyonlands National Park is a wild，lonely area of rocks，rivers and desert plants.Only Native Americans，cowboys，and explorers entered this area before the park was set up in 1964.Even today，it is difficult to walk or ride through the park.The roads are still made of dirt.Driving requires a special veh
12、icle.The National Park Service says Canyonlands National Park is wild America.Rivers created the area as they cut rocks into many different formations.At the center of the park are two deep canyons carved by the Green and Colorado Rivers.Three areas that surround these rivers are included in the par
13、k.One of these areas is called the Maze District.This area includes rock art made by people who lived there more than 2,000 years ago.Yet many people today cannot see the Maze District because it is so difficult to reach.The area is one of the loneliest and wildest areas in the United States.Another
14、 area of the park is called the Needles.It includes long，thin，red and white rocks that reach high into the air like fingers on a hand.A good way to see all the areas of Canyonlands National Park is to fly over it.A onehour trip in a small airplane makes it possible to see the parks red rocks，arches
15、and flat areas where ancient Indian people once lived.From high in the air，visitors can clearly see the third area of the parka high broad flat rock known as the Island in the Sky.The island was formed between the two rivers.Another interesting formation is called the Upheaval Dome.This is a huge hole about four hun
