题目

下列各项生物技术中，理论上对遗传信息改变最小的是（    ） A . 经细胞核移植克隆动物 B . 导入外源基因培育转基因动物 C . 经植物组织培养克隆植物 D . 植物体细胞杂交获得杂种植株 答案：C阅读理解。     Visitors to London often eat in restaurants. The owners and workers in them are all from other countries. The visitors say in these restaurants they don't feel they are in England. Most English people eat at home as much as they can. Sometimes they themselves will think they are in another country when they are in restaurants. When an Englishman goes out of a restaurant, he may find that he doesn't understand why everything is written in French and Italian.      Most English people think it is better to eat at home, because it is cheaper. They don't want to spendmuch money on food and they like cooking at home. They like fast food. But for Christmas, they will spend two or three weeks to get ready for it, because they want to have good food.l. Visitors to London often eat in restaurants because __________.A. they don't like the food at homeB. their homes are not in LondonC. it's cheaperD. restaurants are beautiful places2. When English people eat in restaurants, they sometimes think                     .A. they are in another countryB. they are in the countryC. they are themselvesD. they love their country3. Some English people don't know                     .A. why everything comes from French and ItalianB. why people write everything in French and ItalianC. everything in restaurantsD. everyone in restaurants4. English people eat at home because                     .A. it is fastB. the food is expensive at homeC. it is sometimes very cheapD. the food is very cheap at home5.                    English people will spend much time for Christmas.A. In order to get more foodB. In order to have much foodC. In order to get good foodD. In order to have enough food