2[简答题] 马铃薯通常用块茎繁殖，如果用种子繁殖，则不能保持原品种特性，试分析原因。

>> 河南成教 / 医学遗传学

河南成教 / 医学遗传学

2[简答题]
马铃薯通常用块茎繁殖，如果用种子繁殖，则不能保持原品种特性，试分析原因。

积分

医学遗传学

参考答案：

点击查看答案

佳题速递：

4[单选题] （）应依照《固定资产贷款管理暂行办法》制定固定资产贷款管理细则及操作规程 A.借款人 B.各级金融机构董事会 C.贷款人 D.银行业监督委员会消费心理学

交易磋商的一般程序为询盘、（）、还盘和接受。现代物流管理

2[阅读题] A friend of mine named Paul received an expensive car from his brother as a Christmas present. On Christmas Eve when Paul came out of his office, a street urchin(顽童) was walking around the shining car. “Is this your car, sir?” he asked. Paul answered, “Yes, my brother gave it to me for Christmas.” The boy was surprised. “You mean your brother gave it to you and it did cost you nothing? Sir, I wish…” He hesitated(犹豫). Paul thought of course he knew what the boy wanted, but what the boy said surprised him greatly. “I wish,” the boy went on, “that I could be a brother like that.” Paul looked at the boy in surprise, and then he said again, “Would you like to take a ride in my car?” “Oh yes, I’d love to,” the boy answered. After a short ride, the boy turned and with his eyes shining, said, “Sir, would you mind driving in front of my house?” Paul smiled a little. He thought he knew what the boy wanted. He wanted to show his neighbors that he could ride home in a big car. But Paul was wrong again. “Will you stop where those two steps are?” the boy asked. He ran up to the steps. Then in a short while Paul heard him coming back, but he was not coming fast. He was carrying his little crippled(残疾的) brother. He sat down on the step and pointed to the car. “There he is, Buddy, just like I told you upstairs. His brother gave it to him for Christmas and it didn’t cost him a cent. And some day I’m going to give you one just like it…then you can see for yourself all the nice things in the Christmas windows that I’ve been trying to tell you about.” Paul got out and lifted the boy to the front seat of his car. The shining-eyed elder brother climbed in beside him and the three began an unforgettable holiday ride.46. The street urchin was very surprised when ______.A. he met Paul B. Paul told him about the carC. Paul received an expensive carD. he was walking around the car47. From the story we can see the urchin ____.A. wished to give his brother a carB. wanted Paul’s brother to give him a carC. wished he could have a brother like Paul’sD. wished Paul could be a brother like that48. The urchin asked Paul to stop his car in front of his house _____.A. to show he had a rich friendB. to show his neighbors the big carC. to let his brother ride in the carD. to tell his brother about his wish49. We can find from the story that _______.A. the urchin wished Paul to give his car to BuddyB. the urchin wished to have a rich brotherC. the urchin had a deep love for his brotherD. the urchin’s wish came true in the end50. The best name of the story is ______.A. A Christmas Present B. Paul, a Kind-hearted PersonC. A Brother Like That D. An Unforgettable Holiday Ride 英语(一)

[填空题] CAD/CAM技术发展将集中在集成化、网络化、、和高效化等四个方面。专业 CAD

吗啡的欣快感和情绪反应主要是激动药理学

涉外礼仪的一项基本原则是（）。自大狂傲畏惧自卑不卑不亢放肆嚣张社交礼仪