40. Great as Newton was， many of his ideas _C_ today and are being modified by the work of scientists of our time.

A are to challenge B may be challenged C have been challenged D are challenging

as表示“尽管”时引导从句，从句中的表语可以放在引导词之前构成部分倒装。

41. Please be careful when you are drinking coffee in case you _D_ the new carpet.

A crash B pollute C spot D stain

pollute vt. 污染; spot n. 地点，场所，斑点，污点;v. 使…上有斑点、污点。

spotted dog 斑点狗。 stain v. 弄脏，玷污，染色。

59. The tomato juice left brown _A_ on the front of my jacket.

A spot B point C track D trace

42. I‘d rather read than watch television; the programs seem _B_ all the time.

A to get worse B to be getting worse C to have got worse D getting worse

all the time 始终，一直。

43. Convenience foods which are already prepared for cooking are _D_ in grocery stores.

A ready B approachable C probable D available

convenience foods 方便食品; instant coffee/noodle 速容咖啡/速食面。

ready adj. 准备好的; approachable adj. 可接近的，平易近人的，亲切的。

probable adj. 可能的; available adj. 可获得的，可利用的，可支配的。

44. When I caught him _A_ I stopped buying things there and started dealing with another shop.

A cheating B cheat C to cheat D to be cheating

45. It is important that enough money _A_ to fund the project.

A be collected B must be collected C was collected D can be collected

46. Some old people don’t like pop songs because they can‘t _C_ so much noise.

A resist B sustain C tolerate D undergo

tolerate vt. 忍受，容忍; undergo vt. 经历，遭受。