题目内容
【题目】完形填空
阅读下面短文,从短文后各题所给的A、B、C、和D四个选项中,选出可以填入空白处的最佳选项。
Eddie has lots of hobbies, but he loves baseball best. So it is his __1__ sport. Eddie plays baseball on a team every year in the spring. He loves to go to baseball __2__.
Every day when it is __3__, Eddie’s father throws a baseball to Eddie in the backyard. This is the time of day that Eddie __4__ best. He enjoys spending time with his father and he loves practicing baseball.
Eddie __5__ baseball cards throughout the year. He and his father visit the __6__ and buy cards for Eddie’s collection. Eddie spends hours with his baseball cards. He arranges them in different __7__, and trades them with other baseball __8__.
One day, Eddie’s father came home with two tickets to __9__ the Atlanta Braves play the next Saturday. Eddie was so __10__. He counted down the days on the calendar.
Finally it was the day of the game. Eddie and his father __11__ to Atlanta early in the morning. Before they watched the match, they __12__ the Braves’ museum at the stadium and saw a short movie __13__the history of the Atlanta Braves. Eddie enjoyed seeing the museum.
They ate __14__ at the stadium, and soon it was time for the game.
The game was exciting. Eddie tried to __15__ every move the players made.__16__ he watched carefully and practiced a lot, he might just be on one of those baseball cards some day!
__17__ the game, Eddie and his father drove home. They talked about the game. They talked about which __18__ were the best, and which __19__ were the most exciting. Eddie went to sleep that night still __20__ of baseball. His dreams were filled with images from his very special day.
【1】A. popular B. favourite C. only D. main
【2】A. practice B. school C. games D. clubs
【3】A. stormy B. rainy C. sunny D. windy
【4】A. exercises B. likes C. learns D. wants
【5】A. sells B. keeps C. collects D. plays
【6】A. buyers B. museums C. libraries D. stores
【7】A. rooms B. sides C. situations D. groups
【8】A. stars B. fans C. agents D. managers
【9】A. see B. join C. attend D. wait
【10】A. amazed B. excited C. proud D. nervous
【11】A. flew B. walked C. rode D. drove
【12】A. visited B. passed C. arrived D. left
【13】A. on B. off C. in D. with
【14】A. breakfast B. dessert C. lunch D. supper
【15】A. choose B. forget C. watch D. copy
【16】A. Though B. Unless C. When D. If
【17】A. Over B. Before C. During D. After
【18】A. seats B. teams C. players D. cards
【19】A. parts B. games C. movies D. sports
【20】A. thinking B. dreaming C. hearing D. talking
【答案】
【1】B
【2】A
【3】C
【4】B
【5】C
【6】D
【7】D
【8】B
【9】A
【10】B
【11】D
【12】A
【13】A
【14】C
【15】C
【16】D
【17】D
【18】C
【19】A
【20】A
【解析】
【语篇解读】本文主要说了Eddie热衷于棒球运动,以及父亲对其爱好的帮助。
【1】根据上一句中的"he loves baseball best"可知,棒球是他"最喜欢"的体育运动。
【2】根据上一句中提到的"他每年春天都加入一个队打棒球"和第二段最后一句中的practicing一词可知"他喜欢练习打棒球"。
【3】 根据下文中的in the backyard以及常识可知,打棒球应该是在天气较好的日子里。
【4】全文主要叙述了Eddie酷爱棒球,所以打棒球的时候是他最喜欢的时间。
【5】根据下一句中的collection可推知,此处指他喜欢收集棒球卡片。
【6】根据空后的buy cards可知,这里指他们到商店里去买。
【7】此处指"他把收集到的卡片分类整理"。group"类别,种类",符合常理。
【8】Eddie是一个棒球迷,所以这里指他和其他的棒球迷互相交换棒球卡片。
【9】由上文的two tickets可知,此处是指去"看"下周六Atlanta Braves的比赛。此句为see sb.do sth.结构。
【10】 Eddie是个棒球迷,能有机会去看精彩的棒球赛,他当然很"兴奋"。
【11】根据最后一段第一句话中的drove可知,他们是开车去的。
【12】表示"参观"博物馆,根据下文的"Eddie enjoyed seeing the museum."也可推知答案。
【13】on表示"关于",即有关Atlanta Braves历史的短小影片。
【14】他们清晨出发,之后参观博物馆,观看短电影,显然时间已近中午了,所以应该是吃午饭。
【15】此时是在观看比赛,所以他应该仔细观摩(watch)每个队员的一举一动,根据下文的"watched"也可得出答案。
【16】表示"假设",他希望自己勤加练习,有朝一日能成为棒球卡片上著名的棒球运动员之一。
【17】表示"看完球赛后"。由"Eddie and his father drove home."可知答案。
【18】父子两人讨论比赛中哪些队员表现最好;其他三项显然不符合文意。
【19】他们讨论比赛中哪些部分最精彩。其他三项均不符合语境。
【20】Eddie在晚上睡觉时依然"想着"棒球。think of"想象,设想"。
【题目】某生物兴趣小组对学校草坪的某种雌雄同花的植物进行了遗传学研究,发现该种植物的花色有红色和白色两种。他们查阅资料后发现,该对性状受一对遗传因子控制。为了对该对性状做进一步研究,该小组随机取红花和白花植株各60株均分为三组进行杂交实验,结果如表所示:
组别 | 杂交方案 | 杂交结果 |
A组 | 红花×红花 | 红花︰白花=14︰1 |
B组 | 红花×白花 | 红花︰白花=7︰1 |
C组 | 白花×白花 | 全为白花 |
(1)根据 组结果,可以判断 色为显性.
(2)试解释A组结果没有出现3︰1性状分离比的原因 .
(3)B组亲本的红花中,纯合子与杂合子的比例为 .
(4)要判断B组杂交结果中某红花植株是否为纯合子,最简单的方法是 .