30. The light is still on. They _________ to switch it off.

　　[A] may forget [B] should have forgotten

　　[C] must have forgotten [D] can't have forgotten

　　31. No one can prevent us _________ taking the socialist road.

　　[A] with [B] from [C] to [D] for

　　32. The population of Shanghai is bigger than ________ of Qingdao.

　　[A] this [B] those [C] it [D] that

　　33. She promised her parents to write _________ while she was away.

　　[A] the other day [B] each other day [G] every other day [D] any other day

　　34. -Mike has lived in Beijing for 5 years.

　　-Yes, but he _________ can ' t speak Chinese.

　　[A] hardly [B] nearly [C] yet CD] still

　　35. Neither you nor he ________ to blame.

　　[A] is [B] be [C] are [D] am

　　第二节 完形填空

　　阅读下面短文 ，从短文后所给各题的四个选项 (A .B .C和D )中选出能填人相应空白处的最佳选项 ，并在答题卡上将该项涂黑。

　　Human beings have used tools for a very long time. In some parts of the world you can still find tools that people used more than two million years ago. They made these tools by hitting one stone (36) another. In this way they broke off pieces from one of the stones. These chips of stone were usually (37) on one side. People used them for (38) meat and skin from dead animals, and (39) for making other tools out of wood. Human beings need (40) tools because they did not have sharp teeth like other meat-eating (41) , such as lions and tigers. Tools helped people to get food more (42) .

　　Working with tools also helped to (43) human intelligence. The human brain grew bigger, and uman beings began to invent more and more tools and machines. The stone chip was one of the first tools (44) people used, and perhaps (45) the most important. Some scientists say that it was the key 46 the success of mankind.

　　Since 1960 a new kind of tool has appeared. This is the silicon chip( & ft )@a little chip of silicon crystal. It is (47) than a fingernail, but it can (48)) more than a million "bits" of information. It is (49) electronic brain.

　　Every year these chips get cleverer, but (50) size gets smaller, and their cost gets (51) .

　　Human beings used (52) chips for more than two million years, but human (53) changed very little in that time. We have used silicon chips for (54) a few years, but life is changing faster every day.

　　(55) will life be like in twenty years?

　　36. [A] after [B] to [C] against [D] among

　　37. [A] sharp [B] hot [C] strange [D] weak

　　38. [A] hitting [B] cutting [C] hit [D] cut

　　39. [A] not [B] only [C] just [D] also

　　40. [A] store [B] find [C] use [D] repair

　　41. [A] animals [B] persons [C] tools [D] people

　　42. [A] easy [B] easily [C] difficult [D] hard

　　43. [A] prevent [B] hard [C] develop [D] open

　　44. [A] that [B] which [C] what [D] as

　　45. [A] they're [B] it's [C] there're [D] you're

　　46. [A] of [B] in [C] to [D] on

　　47. [A] smaller [B] bigger [C] newer [D] softer

　　48. [A] send [B] produce [C] store [D] destroy

　　49. [A] an [B] one [C] a [D] the

　　50. [A] its [B] our [C] their [D] your

　　51. [A] more [B] fewer [C] greater LD] less

　　52. [A] stone [B] silicon [C] wood [D] iron

　　53. [A] body [B] life [C] nature [D] health

　　54. [A] quite [B] only [C] nearly [D] hardly

　　55. [A] How [B] When [C] What [D] Why