以下用直接工程费乘以相应费率计算的措施费的是( )。 A．环境保护费 B．文明施工

阅读下面短文，并借助上下文和插图补充所缺信息。每个空格只能写一个形式正确、意义相符的单词。请把单词写在答题卡相应题目的答案位置上。

Remember to be a good boy or girl any time. It’s important to have good manners, especially in some public 小题1: .When you are waiting小题2: line, don’t jump the queue. Be patient. Don’t stand too close to others . Keep 20cm小题3: if you can.

Follow the advice of the workers when you are having a visit on a place of interest. Don’ t climb on exhibitions. Make小题4: it’s OK to take 小题5: before you hold up your camera. When you go to shows, 小题6:clean clothes. You should get to the show 15 minutes before it starts. During the shows, turn小题7:your cell phone. Don’t eat during the show. Restaurants will be quite busy. Don’t stay too long when you 小题8: eating . Remember to 小题9: your rubbish away after the meal.

Good manners can make you a gentleman or lovely lady. 小题10:  you are , others will be pleased with you.

温 * * * * 在国家科学技术奖励大会上强调，科学的本质在于创新。当今时代，人类社会正在经历一场全球性科技革命的挑战，我们要抓住这个机遇，增强民族创造力，使中 * * “百舸争流千帆竞，重新闯关铸辉煌”，以应对日益激烈的国际竞争。这充分说明[ ]

①创新思维是增强创新能力的关键

②培养青少年的好奇心是走向创新的前提

③创新是一个民族进步的灵魂

④不断创新是当代科技发展的主旋律

A．②③

B．①②

C．①④

D．③④

羊水指数法（AFI）≤5．0cm可确诊为羊水过少。

系统性因素引起的质量变异，一般属于( )。

A．正常变异

B．非正常变异

C．随机变异

D．有规律变异

设二叉树根结点的层次为0，对含有100个结点的二叉树，可能的最大树深和最小树深分别是______。