1 Laser beams can be used to bore metals and other hard materials.% x' Z4 D' x# F: y1 P( W
A trim B melt C drill D slice9 {# F# Q: ^# R! Q
2 The cost of elections in the United States is borne by both the government and the private sector.- c* L9 @5 t: I/ ]' B& q
A known B fought C exposed D assumed7 o: z5 K I2 U% u" i2 R7 P2 j: v
3 Acknowledged as the main cause of hay fever the pollen of ragweed is very bothersome. - y* T+ g4 W' u2 b A intriguing B annoying C potent D significant* m3 A7 E% Q w
4 They got in quite a brawl.. {% i- \0 w4 r. X
A snit B fight C bally D littering 1 v z% C3 a+ o+ E5 q3 }" t2 n5 By providing legal representation,the American Civil Liberties Union works to defend citizens 0 e3 j' b/ @% ?' [2 B6 C against breaches of their civil rights. 8 y2 g8 {$ g A% a# t/ R/ _# S2 x A branches B exercises C perusals D violations . j( ] h4 L$ O+ `1.C2.D3.B4.B5.D