邵阳，被誉为“柑橘之乡”．尤其以洞口地区的蜜桔最为著名，被周恩来总理亲自命名为“雪峰蜜桔”，它糖分高、酸度低，深受广大百姓喜爱，桔子的“皮”和桔子瓣都属于果皮，是由花的_发育而来的，“籽”是由_发育而来的．（　　）

世界因文化的差异而丰富多彩，在全球化的今天，面对外来文化，我们应该（     ） 

小清总结了清朝实行闭关锁国政策的几点原因，其中正确的是（    ）

①当时，自给自足的封建经济占主要地位

②统治者认为天朝物产丰盈，无须同外国互通有无

③中国的生产和科学技术逐渐在世界上落伍

④统治者害怕外国商人与沿海人民来往

关于感应电流，下列说法中正确的是（   ）

    Mrs White had a problem. Her young son, Timmy, hated to go to bed at night. Mrs White read to him and gave him warm milk, but Timmy refused to fall asleep. No matter what she did, Timmy wanted to stay up. One day Mrs White had an idea.

    Ever since Uncle Charlie had taken him sailing, Timmy wanted to be a sailor. He loved fishing with his father. He loved to watch the waves wash against his hair. “some day,” Timmy said, “I'm going to have my own boat. And I'm going to be the captain.”

    So Mrs White had a boat built—one that could be hung from the ceiling in her son's bedroom. She felt that if he could sleep in the boat, he would want to go to bed at night.

    The boat builder made the boat and hung it in Timmy's bedroom. Timmy loved it.

    Finally Timmy was happy to go to bed.