We could see nothing in the thick fog at a _____ of two meters, so we got lost.
| A．length | B．distance | C．space | D．way |
30. The giant panda is an ________ .
| A．endanger species | B．endangered specie | C．endangering species | D．endangered species |
29. The computer system _______ suddenly while he was searching for information on the Internet.
| A．broke down | B．broke out | C．broke up | D．broke in |
28. Only when I read this story for a second time ______ to appreciate its beauty.
| A．did I begin | B．that I began | C．I began | D．had I begun |
27. The company was named Gates Hall ______ a man named James Gates.
| A．in need of | B．in search of | C．with the help of | D．in memory of |
26. He wanted the girl he was looking forward _________ stay with him.
| A．for | B．to | C．to to | D．to with |