6、草履虫细胞和植物细胞的结构相比，不具有（ ）
A．细胞壁 B．细胞膜 C．细胞质 D．细胞核
5、现代科学家利用许多新的生物技术对细胞的遗传物质进行改造，使细胞获得许多新特点。下列与之无关的科技成果是（ ）
A．克隆羊多莉的诞生 B．用草莓制成草莓酱
C．培育无籽西瓜 D．培育出重达l千克／个的西红柿
4、赤潮、水华现象引起的结果是（ ）
A．造成水体缺氧
B．水中有机物含量增多，为鱼类提供饵料
C．鱼类数量增多
D．藻类植物产生大量的氧，水中氧丰富
3、鱼必须生活在水中，离开水一段时会死亡，对此现象最好的解释是（ ）
A．生物适应环境 B．生物依赖环境
C．环境影响生物 D．生物影响环境
2、下列各项中正确的食物链是（ ）
A．草→羊→狼 B．阳光→草→昆虫→蛙
C．兔→狐→细菌 D．细菌→水草→小鱼→大鱼
1、用显微镜观察植物细胞时，视野中出现一个圆形且周边呈黑色、中央透明的物像，这一物像是（ ）
A．细胞 B．灰尘 C．细胞核 D．气泡
27、 Liu Xiang was the first Asian to win the men\'s 110m hurdles (跳栏) at the Olympic Games in Athens. After that he became an idol(偶像) to the young people. When Liu Xiang crossed the finish line far ahead of the other players, in a world record-equaling time of 12. 91 seconds, many fans burst into tears. It was Liu\'s first Olympics and he won the gold medal. "I never thought I could run under 13 seconds, and I never thought I would break the Olympic record, "said Liu in tears, "I am very, very excited. This is a wonder. I\'m proud not just for myself and for Chinese but for Asia. My race went wonderfully from start to finish. Liu added, It is an amazing(惊奇的) experience being the Olympic champion. I want to thank my coach and my friends for all their help. I think today we Chinese have showed the world we can run as fast as anybody else. " When Liu was a grade four student in a primary school, he was chosen by the Junior Sports School of Putuo District in Shanghai to practice jumping. But when a bone test showed he would not become a tall man, Liu was asked to give up practising after one year although he had won the national championship for his age group. Liu\' s parents also wanted him to give it up and study more at school, but Liu decided to continue practising jumping. In 1998 when Liu Xiang, aged 15, met the famous coach Sun Haiping, his career changed greatly. Sun believed Liu Xiang was a rising star and after visiting Liu\'s parents sev?eral times, finally he persuaded them to let Liu practice the 110m hurdles. Since his return from Athens, Liu Xiang has been at the centre of a media circus(媒体焦点). He has been to many press appearances and meetings. After Liu got the gold medal, he became well known all over the world. But Liu thinks 2004 is just the beginning, and he ex?pects to be at his peak(顶峰) in the sunmmer games in Beijing in 2008. Liu Xiang said, "For some players, it\'s just a job. For me, it\'s what I love. " 1. At what age did Liu Xiang win the Olympic championship? A. 12 B. 15 C. 21 D. 22 2. What does the underlined word "persuaded" mean in Chinese? A．支持 B．说服 C．教育 D．阻止 3. Why did Liu Xiang give up jumping? Because________. A. a bone test showed he wouldn\'t become tall enough to be a high jumper B. his parents stopped him from jumping C. he was satisfied(满足) after winning the national jumping champion for his age group D. the famous coach Sun Haiping changed his and his parents\' ideas 4. What does Liu Xiang think of being a sports player? A. It is just a job for him. B. It can bring him a lot of money. C. It is what he loves. D. It can bring him a lot of honour(荣誉). 5. From the story, we know that________. A. Liu Xiang was not the first Chinese to win the sprint(疾跑) gold medal in Athens B. if Liu Xiang reached the finish line in 13 seconds, he would break the world record C. the Chinese people can run as fast as the people in the other country D. Liu Xiang didn\'t want to take part in the Olympic Games in 2008
26、 On Sunday morning, a strong earthquake hit Indonesia and then big tsunamis(海啸) followed. They soon went on to other countries in the south and southeast Asia as well as East Africa. Tsunamis are especially dangerous for children. By Wednesday, nearly 60 000 people died because of the tsunamis. 30% of them were children, and most of them were 5 to 12 years old. In open seas tsunamis are only one or two metres high. When they are near land, they are as high as 10 metres, Houses and cars near the sea can be taken away by these big waves. Because tsunamis move fast and can travel to another side of the sea within one day, they may affect(影响)a lot of places. The Pacific Ocean(太平洋)has a lot of strong tsunamis because of the size of the ocean and large earthquakes there. China doesn\'t see tsunamis often because its sea floor is quite flat(平的). Islands around China also help the country avoid from them. What should you do when there\'s a tsunamis? Move to a safe place. If you are near the sea and you feel the earth shake, move to higher ground. Stay away from rivers and streams(溪流). Reported by "China Daily" on Friday, December 31st, 2004.
1. The big Asian tsunamis first happened________.
A. on Friday morning B. on the morning of December 26th C. on December 31st, 2004 D. three days ago
2. Which places did the big tsunamis hit? A. All the coastal(海岸的) countries. B. Only in Indonesia and Sri Lanka. C. South and southeast Asia as well as East Africa. D. Vietnam(越南)and India.
3. Why does the Pacific Ocean have a lot of strong tsunamis? A, Because there are few islands in the ocean. B, Because of the strong wind on the sea. C, Because there are many Asian countries around the Pacific Ocean. D. Because of the large earthquakes and the size of ocean.
4. Which of the following is wrong? A. In open seas tsunamis are one or two metres high. B. Tsunamis can\'t travel to another side of the sea within 24 hours. C. Most of the children who died in tsunamis were under 5-12 years old. D. China\'s sea floor is quite flat and tsunamis seldom happen.
5. You should________ when there\'s a tsunamis according to the passage. A. listen to a weather report B. try to find out what will happen C. run to the policeman for help D. get to a higher and safer place as soon as possible
25、淄博市教育局为全面实施素质教育，减轻中小学生不必要的课业负担，确保学生健康成长，最近发出通知，要求学校合理安排课时，调整学生在校作息时间。
请仔细观察上面某学校的两张作息时间
24、A. Small and brown. B. Big and brown. C. Big and black.
