题目

  English is an excellent language to learn. It is important for study, business and travel. Read the information below and learn more about listening and reading skills. Listen to English radio.     One of the best ways to improve your English listening is to listen to English radio on your mobile phone. •   You should listen to the radio shows for more than 30 minutes every day. •   Try to understand what is said. Don’t just let the English wash over you. If you find the listening too fast, try to pick out the key words to get a general idea of it. •   You can also13．在下述条件下，生物产生的变异现象能够遗传给后代的是（　　）A．同一品种的葡萄，用扦插办法种植在肥沃土壤中结出的果实颗粒较大，种植在较贫瘠土壤中结出的果实颗粒较小B．将普通甜椒种子进行卫星搭载后，经播种而培育成果实较大的太空椒C．用公驴和母马交配，能生出力大、抗病力和适应力强的骡，但骡不能繁殖后代D．兄弟二人，哥哥长期从事室内工作，皮肤较白；弟弟长期从事室外工作，皮肤较黑