【单选题】Directions: This par t is to test your listening ability. It c onsis t s of 3 s e ctio n s . Section A Directions: This s e ction is to test your abi li ty to give proper respons e . There are 5 recor...
【简答题】Fill in the words according to the meaning.(请填写完整的单词) 1 extremely bad. eg_ _ _ _o_ _ 2 a large public meeting , especially that is held outdoors to support a political idea, protest, etc. r_ _l_ 3 cha...
【单选题】If you measure the ability of cytotoxic T cells from an HLA-B27 person to killing virus X infected target cells, which one of the following is correct?( )
A.
Any virus X infected target cells will be killed.
B.
Only virus X-infected cells with HLA-B27 will be killed