is known to us all that the old scientist，for life is hard in the past，still works hard in his eighties．
| A．It；whom | B．As；whom | C．As；whose | D．What：whom |
30．___________true events, the film This Is It follows the preparation for Michael Jackson’s concert in London.
| A．Being based on | B．Basing on | C．Based on | D．Having based on |
29．Apart from the blood that belonged to the three people, the detectives found only_______clue.
| A．one other | B．one another | C．other one | D．another one |
28．The Changbaishan Mountains have a huge variety of scenery, some of the best of__________can only be reached on foot.
| A．that | B．which | C．what | D．Where |
27．So far, my home village has changed________recognition.
| A．from | B．beyond | C．over | D．With |
26．What a pity! The car ran out of sight before I could_________its number.
| A．get across | B．get off | C．set aside | D．set down |