Unit 3 Life in the future Language points课时作业

Ⅰ. 单句填空

1. The number of car accidents related to　　　(drive)with alcohol is going up.

2. Even the best speaker will find himself　　　(lose)for words the first time he is on the stage.

3. Only after you pass the examination, the interview and the first month' s assessment 　　　you be admitted to our company.

4. The number of the children who have lost both parents to Aids　　　(expect)to rise, reaching more than 26 million in 2015.

5. 　　　is estimated that between 2000 and 2020, over 68 million people will die of Aids in the countries most affected by the epidemic.

6. Many drug users wish they　　　rewind their lives and start over again.

7. The fact is that unlocking the creativity of our workers is　　　we' ve had our greatest success.

8. I thought her nice and honest the first time I　　　(meet)her.

9. The problem　　　(become)so severe that all Internet users are affected by it either directly or indirectly.

10. 　　　(consider)how bad the situation with cybercrime against companies has got, many people wonder why so little is known about this.

11. 　　　(face)with a growing number of medical students, and few training hospitals, a Mexican university is turning to robotic patients to improve doctor training.

12. You were out enjoying yourself when you ought to　　　(study).

13. 　　　(choke)back tears, Patricia said she admired other children who had fathers around them very much because she never saw her father.

14. I was still sleeping when the fire broke　　　, and then it spread quickly.

15. Please follow your supervisor' s instructions, or you　　　(offend)him.

Ⅱ. 阅读理解

　　The idea of being able to walk on water has long interested humans greatly. Sadly, biological facts prevent us ever accomplishing such a thing without artificial aid-we simply weigh too much, and all our mass pushes down through our relatively small feet, resulting in a lot of pressure that makes us sink.

　　However, several types of animals can walk on water. One of the most interesting is the common basilisk Basilicus basilicus, a lizard(蜥蜴)native to Central and South America. It can run across water for a distance of several meters, avoiding getting wet by rapidly hitting the water' s surface with its feet. The lizard will take as many as 20 steps per second to keep moving forward. For humans to do this, we' d need huge feet that we could bring up to our ears in order to create adequate "hitting".

But fortunately there is an alternative:cornflour. By adding enough of this common thickening agent to water(and it does take a lot), you can create a "non-Newtonian" liquid that doesn' t behave like normal water. Now, if the surface of the water is hit hard enough, particles(