6. S_____________ enough, some famous scientists have the qualities of being both careful and careless.

5. ---Could you turn the TV down a little bit?

--- I’m sorry. Is it d_____________ you?

4. Some people say the deaths were just _____________ (巧合).

3. Carter’s _______________ (秘书), Richard Bothell, died of heart trouble four months after the tomb was opened.

2. When _____________ (比较) different cultures, we often pay attention only to the differences without noticing the many similarities.

1. Howard Carter was taught to draw by his father, who was an _______ (艺术家).

49. _____ he realized it was too late to return home.

A. No sooner it grew dark than　　　　　　 B. Hardly did it grow dark when

C. It was not until dark that　　　　　　　　 D. It was until dark that

48. So little _____ agree on the plan that they could not settle their difference.

A. did they　　 　　 B. do they　　　　　　 C. they did　　　　　 D. they did not

47. We were lucky enough, for no sooner _____ home _____ it rained.

A. we returned; and　　　　　　　　　　　　　　　　　　　　　 B. we had returned; when

C.did we return; when　　　　　　　　　　　　　　　 D. had we returned; than

46. _____ , he would have passed the exam.

A. If he were to study　　 B. If he studied hard　 C. Had he studied hard　 D. Should he study hard