在“利用单摆测重力加速度”的实验中： （1）以下做法中正确的是[ ] A．测量摆

情景对话

—Where shall we take our children this weekend?

—We could take them to Water World or to Oldfield Adventure Park.__1__

—Well, how far away are they? I don't want to spend all day in the car.

—__2__But Oldfield Adventure Park will take about two and a half hours if we're lucky.

—__3__

—Water World has a huge fun swimming pool.__4__

—I really don't like zoos.I hate seeing animals in cages.

—Well, there aren't any animals at Water World.

—If we are going there, I'm going to take a picnic basket. I know they have got restaurants but they

always expensive.__5__

—That's a good idea.I’ll tell the children.

—Ok.

A. Our children love animals very much.

B. Do they have swimming pools?

C. I'd rather eat in restaurants.

D. They love that sort of thing. Which one do you prefer?

E. The Oldfield Adventure Park hasn't got a pool, but it's got a small zoo.

F. Well, Water World is pretty close-about one hour away.

G. I'd rather take our own food and drinks.

某物质在空气中燃烧，产物之一为二氧化碳，则该物质（　　）

A．一定是碳的某种单质

B．一定是含氧元素的物质

C．一定是含碳元素的物质

D．一定是碳、氧元素组成的化合物

下列不属于初步可行性研究的内容的是()。

A.市场分析和预测

B.资源利用效率和土地利用及移民搬迁安置方案分析

C.产品方案

D.项目建设与运营的实施方案

中学生对初中学习生活有不同的感受，是因为[ ]

A．他们的学习环境不同

B．他们的知识水平不同

C．他们的学习方法、策略不同

D．他们的家庭状况不同

监舍建设的要求是坚固、通风、透光、清洁、保暖。