问题 单项选择题

我国目前使用的有大连、大沽、黄海、废黄河口、吴淞、珠江口等基面,要求统一的基面是1985年确定的黄海基面(称为1985国家高程基准),这些基面均为()。

A、冻结基面

B、测站基面

C、假定基面

D、绝对基面

答案

参考答案:D

阅读理解

阅读下面短文,并根据短文后的要求答题。

      The relationship between students and teachers is less formal in the U.S. than in many other countries,

especially at college. (1)当老师走进教室时,学生不必起立。Students are encouraged to ask

questions during class, to go to the teacher’s office for help after class, and to phone if they can’t go to

school and need help with their lessons. (2)Most teachers allow students to enter class late or leave early,

if necessary.

     (3)However, students are still asked to be polite to their teacher and classmates and to be quiet during

a test. When students want to ask questions, they usually put up a hand and wait. When the teacher or a

student is speaking to the class, it’s rude to talk to another classmate, even in a low voice. When a test is

being given, talking to a classmate is not only rude but also wrong. In the eyes of most American teachers,

students who are talking to each other during a test are cheating.

1.将(1)句译成英文。

________________________________________________________________

2.将(2)句改为被动语态。

________________________________________________________________

3.将(3)句译成中文。

______________________________________________________________

4.从文中找出与所给句子意义相近的句子。

Most teachers think it is dishonest of students to talk about something when they are having an exam.

________________________________________________________________________

5.写出文中最能表达该短文主题的句子。

________________________________________________________________

实验题

夏天中午海边的沙子热海水却很凉;傍晚海边的沙子凉,海水却较暖和。对此,同学们提出如下猜想:可能是沙子吸热升温或放热降温都比水快,两探究小组都设计实验去验证。为了比较水和沙子容热本领的大小,小明做了如图所示的实验:

(1) 他们在实验前准备了火柴、酒精灯、烧杯、沙子、水、搅棒、铁架台、石棉网、温度计、秒表除此之外,还需要的测量工具是________。

(2) 加热过程中,用搅棒搅动的目的是_________________(图中搅拌没有画出);水和沙子吸热的多少是通过_______________________来反映的(选填“温度计示数”或“加热时间”)。

(3) 设计实验方案时,需要确定以下控制的变量,你认为其中多余的是____。

A.采用完全相同的加热方式

B.酒精灯里所加酒精量相同

C.取相同质量的水和另一种液体

D.盛放水和另一种液体的容器相同(4) 两小组获得的实验结论分别是:①等质量的沙子和水升高相同的温度,加热沙子的时间短;②等质量的沙子和水加热相同的时间,沙子的温度上升得多。你认为上述结论能验证实验猜想的是_________(选填“仅是①”、“仅是②”或“①和②”)。

(5) 探究过程中也有部分同学提出猜想:可能是中午海水蒸发吸收热量,所以温度低;而沙子不蒸发,所以温度高,你认为上述猜想是否正确,请说明理由:

_______________________________________________________________________。