英语周报高考仿真试题第4期答案

第二部分:参考范文was stuck for five or six minutes though it felt much longer. How I wished I had not actedo foolishly, making myself a laughing stock of my family! I could well imagine how they wouldok when my head come out. Seeing my repeated efforts but in vain, Jason rushed out of theoom and turned to Dad for help. Seeing me caught in such a situation, Dad was unexpectedlysurprised, but soon surprise transformed into laughter. He tried my approaches, and eventuallymanaged to gt my head out by carefullythe pumpkin open with a knife. Just when I feltrelieved to be freed form the pumpkin, I suddenly found that mon should be shooting all thathappened to me and would upload it onlineThat video was posted online the Monday before Halloween. It went viral immediately. Justwithin hours, hundreds of likes and funny comments appeared, showing their enthusiasm.Constant streams of curious people even came by to take photos with us and my prized pumpkinJson was really excited and Mon was glad that her video should become such a hit and thus greweven crazier about shooting videos. But for me, though a little embarrassed, I soon totally forgotInforgettable"incident and set out for the trick-or treating. i would like to take it as a treat toadd joy and un to this festive Halloween for everyone.原作续写I was stuck for five or six minutes though it felt much longer. The video cuts before myrescue Dad got me to push my head farther into the pumpkin so Mom could reach in and undonytail. I emerged withose plugged with pulp(糊状物)hat Facebook video went up the Monday before Halloween, and by the end of that day it hadover 1.000People asked MonYou Tube, and by wednesdaygetting 5then the international me.- the video startedracking up hundreds of thousands of views. When I went on a youth camp, I was rebychildren I've never net. The pumpkin also became a minor celebrity. Passers-by and trick-orwould knock and ask, "which is Rachel's pumpkin? "before taking selfies with itAlthough our pumpkin carving the following year was a more sedate affair, I wouldn't sayhide-and-seek and became hopelessly jammed It was Dad who responded to my cries for achorearned my lesson. A few months later I squeezed myself into a laundry basket during a game

4.【答案】C解析】在减数分裂过程中,减数第一次分裂出现同源染色体分离现象,所以染色体数目减半发生在减数第一次分裂时期,A正确:四分体中发生的非姐妹染色单体间的交叉互换,增加了配子的多样性,即增加了后代的遗传多样性,B正确:蝗虫是比较好的观察减数分裂的动物材料,但雌蝗虫的卵巢内卵细胞数量少,一般不使用卵巢切片,而是用雄蝗虫的精巢切片观察,C镨误:可以通过建构物理模型模拟减数分裂中的染色体变化,D正确

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