可用烧杯进行加热的是（）。 A.汽油； B.酒精； C.水； D.煤。

单词拼写（共10小题；每小题1分，满分10分）

根据所给的汉语或首字母提示写出单词的正确形式

1. Everybody says it is _______________(值得的)seeing but I find nothing special about that place.

2. There was not enough_______________(证据) to prove that he stole the wallet.

3. Women were not allowed to take part in the Olympic Games in____________(古代的) times.

4. Has any Asian nation ever_______________(主办)an important soccer match?

5. He is good at_________________(计算) the cost of a trip.

6. P________________ speaking. I don’t like the way he speaks to me.

7. Wildlife p___________________ is a topic that is very important.

8.Hearing the funny story, I burst into l___________________.

9. A___________________ to a UN report, about 844 animals and plants have disappeared in the last 500 years.

10.It was one of the most serious accidents this year. Very few passengers s_____________ in it.

— Do you know what EU stands for, Tommy?

— Sure. It stands for the European Union, _____ European political and economic organization that

     encourages trade and friendship between _____ countries that are members. [ ]

A. a, the

B. an, the

C. a; the

D. an, /

某同学利用如图1所示的实验装置验证机械能守恒定律.

（1）请指出该同学在实验操作中存在的两处明显错误或不当：

①                              ；②                            ；

（2）该同学经正确操作得到如下图2所示的纸带，取连续的六个打的点A、B、C、D、E、F为计数点，测得点A到B、C、D、E、F的距离分别为h₁、h₂、h₃、h₄、h₅．若打点的频率为f，则打E点时重物速度的表达式为：                         .

（3）若利用此装置测量当地的重力加速度，则=                               。

保险合同变更时最常用的书面单证是（）。

A.暂保单

B.批注

C.保险凭证

D.批单