30. Due to the widespread _______ of this medical technology, more disease can be discovered and treated at an early stage.

A. presentation　　　 B. application　　　 C. qualification　 　　　D. appreciation

29. It’s very dangerous to be ________ to the virus without any protection.

A. explored　　　 　　B. uncovered　 　　 　　C. affected　　　 　　　D. exposed

28. We all went to Jiuzhaigou during the summer holidays ____ Zhang Lin who was not herself at that time.

A. in addition to　　 　 　B. besides　 　　　　C. including　　 　　　　 　　D. apart from　

27. I have searched ________ for the book but couldn’t find it.

A. accurately　　　 　B. technically　　　 　C. thoroughly　　 　　D. firmly

26. The reason for our failure was the _______ of enough time and money.

A. lack　　 　　　　　　　　　　 　B. limit　 　　　　　C. use　 　　　　　　　 　　　　D. demand

25. All the others seem to know each other and I began to feel ________.

　 A. given away　　　 　B. left out　 　　　　　 　　C. turned down　 　　 　　D. fallen behind

24. Shelly had prepared carefully for her biology examination so that she could be sure of passing it at her first_________.

　 A. intention　　　 B. attempt　　　C. purpose　　　 D. desire