Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before your choices. Each choice in the bank is identified by a letter. please fill in each blank with a letter. You may not use any of the words in the bank more than once. Don't squash that bug! Cockroaches ( 蜂挪), beetles ( 甲壳虫), spiders and worms may be the U. S. government's next line of (1)—————in the war on terror. (2)—————by the Pentagon, scientists are recruiting insects, shellfish , bacteria and weeds to act as “ bio-sentinels"( 生物哨兵), which give (3) ————warning of biological and chemical attacks , detect explosives or monitor the spread of contamination ( 污染) . At Virginia Commonwealth University, biologist Karen Kester uses bugs as 44 flying, crawling Q-Tips ” that can check their (4) —————for noxious ( 有毒的) materials from anthrax ( 炭症热) to chemicals more (5) ———, cheaply, and reliably than human-made sensors. “ You look at what these animals have (6 )————up or ingested while going about their day-to-day activities," said Kester, whose work is (7)———by a million-dollar grant from the Pentagon's Defense Advanced Research Projects Agency, or DARPA. The (8)————details of the funding were not disclosed Insects haven't been used this way before. No one's (9)————looked at what they are naturally picking up to sects monitor contamination, ” she said. “It's more than bugs fighting terrorism. It's developing a new kind of technology to detect and map ( 10 )————and chemical contaminants in the environment. ” A) biological F) thoroughly K) habitats B) early G) defense L) Exposed C) ever H) prime M) funded D) Backed I ) picked N) hole E) exact J ) unique O) pleasantly