单选题下面句子中说法完全正确的一项是()。

单选题一对夫妻都正常，他们父母也正常，妻子的弟弟是色盲。请你预测，他们未来的儿子是色盲的几率是______。

单选题It has been ______ since we went out to play last time. A．some time B．sometime C．sometimes D．some times

单选题—______is the weather like today? —It"s sunny.

单选题将下列物质分别露置于空气中一段时间后，其质量会明显增加的是( )。A．浓盐酸B．硫酸铜C．食盐水D．烧碱溶液

单选题实验室中某些气体的制取、收集及尾气处理装置如下图所示(省略夹持和净化装置)。仅用此装置和表中提供的物质完成相关实验，最合理的选项是()。

单选题幼儿通过动手操作，亲自实践，与人交往等去发现原来不知道的东西，从而获得经验的学习方式叫( )。

单选题在学校文化建设中最具有决定作用的是______。

单选题下列文件中，一般用于表示声频文件的是______ A.video.avi B.video.mp3 C.video.psd D.video.jpg

单选题下列说法中，不属于学前儿童语言教育活动评价主要目标的是( )。

单选题儿童多动综合征是小学生中最为常见的一种以注意力缺陷和活动过度为主要特征的行为障碍综合征，其高峰发病年龄为( )．A．4～6岁B．6～8岁C．8～10岁D．10～12岁

单选题下列不属于20世纪以后世界教育特征的是______。

单选题在(0，2π)内，使sinx＞cosx成立的x取值范围为()。

单选题“世界是能够被认知的，世间的万事万物都是以恒定的模式发生和发展，只要通过认真系统的研究都可以被认知”这段话表明了( )A．科学的价值B．科学的态度C．科学的世界观D．科学的精神

单选题教学评价是指有系统地收集有关学生______的资料，参照预定的教学目标对其进行价值判断的过程。

单选题战国后期出现的具有世界影响的教育文献是______。 A．《学记》 B．《中庸》 C．《孟子》 D．《大学》

单选题婴儿生下来就会吸吮，食物进入口中就会引起唾液分泌，这种现象属于______。

单选题 Hundreds of years ago, a Roman army came north from England to make war on Scotland. The Scots, a brave people, loved their country very much. They fought hard to drive the enemy out of Scotland, but there were too many Romans. It looked as if the Romans would win. One night, the leader of Scots marched his soldiers to the top of a hill. "We will rest here tonight, my men," he said. "Tomorrow we will fight one more battle. We must win or we will die. " They were all very tired, so they ate their supper quickly and fell asleep. There were four guards on duty, but they, too, were very tired, and one by one, also fell asleep. The Romans were not asleep. Quickly they gathered at the foot of the hill. Slowly they climbed up the hillside,taking care not to make a sound. Closer and closer they came to the sleeping Scots. They were almost at the top. A few minutes more, the war would be over. Suddenly, one of them put his foot on a thistle(蓟). He cried out and his sudden cry woke the Scots. In a moment, they were on their feet and ready for battle. The fighting was hard but it did not last long. The Scots wiped out the Romans and saved their country. The thistle is not a beautiful plant. It has sharp needles all over it. Few people like it. But the people of Scotland liked it so much that they made it their national flower.

单选题与“知识点之间逐层递进深入”的教学信息组织结构相对应的软件导航是______ A.有线性的横向导航 B.线性的纵向导航 C.非线性的树状导航 D.非线性的网状导航

单选题事先没有预定目的，不需要作意志努力，也不由意识控制的注意是______。