完形填空

阅读下面短文，掌握其大意，然后选择方框内所给单词或短语的适当形式填空。方框内有多余的词或短语。

　　The invention of the camera goes far into the past. In the 1500s, people experimented with cameras that made pictures. But it was 1 the early 1800s that they found a way to make the pictures permanent (耐久的). Even then, photography was a new field. Most 2 had their pictures taken by a photographer. People did not own cameras because taking pictures and developing the film was too 3 .

　　In 1884, George Eastman changed photography by inventing a kind of film that fit into a small camera. 4 the new film was easy to use, many people began to buy cameras. When they 5 up their film, people returned their cameras to the factory. There, the film was developed, and round pictures were printed. Then more film 6 the cameras, 7 were sent back to the owners, along with their pictures.

　　Eastman's camera made 8 easy to take pictures. Today's cameras are even easier to use, and people can put in their own film. Photography has become a growing hobby.

　　There are also many new jobs in the field of photography. One of the most important kinds of work is in news reporting. Newspapers, magazines, and television all need pictures to tell their stories. Photographers aid scientists by 9 pictures through microscopes (显微镜) and telescopes (望远镜). Deep-sea divers take pictures 10 ocean plants and animals, while astronauts (宇航员) take their cameras into space. People find new uses for the camera every day.

如图甲表示某生物膜结构，图中A、B、C、D、E、F表示某些物质，a、b、c、d表示物质跨膜运输方式。图乙和图丙表示物质运输曲线，请据图回答：


（1）若图甲是癌细胞的细胞膜，则膜上含量较正常细胞减少的物质是[　　]　　　　。
（2）若图甲是线粒体膜，b和c过程运输的气体分别是　　　　。b、c运输方式符合图　　　　所表示的物质运输曲线。
（3）若图甲表示人体红细胞膜，则表示Na^＋、K^＋运输的分别是图中　　　　　　。Na^＋、K^＋的运输方式符合图　　　　所示曲线。
（4）已知红细胞吸收葡萄糖是协助扩散，而有人认为小肠上皮细胞以主动运输的方式吸收葡萄糖，请设计实验加以确定。
①实验步骤：
第一步：取甲、乙两组生理状况相同的小肠上皮细胞，放入适宜浓度的含有葡萄糖的培养液中。
第二步：甲组细胞给予正常的呼吸条件，　　　　　　　　　。
第三步：　　　　　　　　　　　　　　　　。
②预测实验结果并分析：
a．若甲、乙两组细胞对葡萄糖的吸收速率基本相同，则　　　　　　　　　。
b．                                。

书面表达，编一个上午英语课上课时的对话

　　T表示教师　　S表示学生

　　M表示班长　　

T: Class begins.(上课)

M: ________

T: ________

S: ________

T: ________

请根据下列四幅图画，用英语写一篇故事。

　　注意：

　　1.故事须包括所有图画的内容，可以适当增加细节，使故事连贯。

　　2.词数100左右。

　　3.参考词汇：a bucket of water 一桶水

appear out of the window 从窗户探出身子

make a fire in the stove 生炉火