题目

如图为利用生物技术获得生物新品种的过程，有关说法错误的是（ ）A．A→B过程中一般用4种脱氧核苷酸为原料，并加入两种引物B．A→B过程利用了DNA复制原理，需要使用耐高温的DNA聚合酶C．B→C为转基因绵羊的培育过程，常选用的受体细胞是卵母细胞D．B→D为转基因植物的培育过程，其中④过程常用的方法是农杆菌转化法One day at the end of the class， a wise teacher told each of her students to ______ a plastic bag and a bag of potatoes to school.The next day she told her students： “from today on ，for every person you don’t like in your lives， you can choose a potato， write the person’s name and the date ______ it and then put it in the plastic bag.” Day after day， some of the students’ bags were very ______. They were told to carry this bag with them everywhere they went for a week. They would put it inside their quilts (被子)___ ____， on the seats when sitting in a car or on a bus， and next to their desks at school. The days carrying the bag around with them________ students get to know what a weight they were carrying in their minds. They had to pay attention to it all the time________ they wouldn’t forget it. As time passed by， the potatoes went bad and ________ terrible. They all tried to get rid of them.Too often we think of tolerance ( 宽容 ) as a gift to ________ people， and it clearly is for ourselves! If we choose to keep our sadness and hatred ( 仇恨 ) in our________， we will have to carry them around all our lives.Do you think you have got __________ from the wise teacher and what she asked her students to do?1.A. take B. bring C. put2.A. in B. at C. on3.A. heavy B. strong C. light4.A. in the morning B. in the afternoon C. at night5.A. kept B. make C. asked6.A. as soon as B. since C. so that7.A. Sounded B. tasted C. smelt8.A. Another B. other C. the other9.A. Hearts B. eyes C. stomachs10.A. Anything B. nothing C. somebody