21. This dictionary is available in (电子的) form.
22. The database u when new information is entered.
23. We are friends and (同事) for more than 30 years.
24. Passengers should leave the airplane by the nearest emergency e .
25. It’s too early to predict the (结果) of the meeting.
26. We have c with each other for years but I have never actually met him.
27. (探测) of the solar system began in the 19th century.
28. Because he had a terrible cold, he couldn’t stop s .
29. Where unemployment and crime are high, it can be assumed that the l results from the former.
30. We have been having some (技术上) problems with the new software.
31. Johnson faces the d of whether to study hard or not.
32. There are many games that can be (下载) free from the Internet
33. A good toolbox is a h thing to have in the house.
34. It’s time we banned (歧视) on the grounds of age.
35. A qualified i will show you how to use the equipment.
36. The human eye is the important sense o .
37. Last week the gentleman d &10,000 to the school.
40. The couple have offered me a room until I can find something more (长久的).
21.electronic 22. updates 23. colleagues 24. exit 25. outcome 26. corresponded 27. Exploration 28. sneezing 29. latter 30. technical 31. dilemma
32. Downloaded 33. handy 34. discrimination 35. instructor 36. organ 37. donated 38. Phenomenon 39. souvenir 40. permanent