问答题

One of the most important non-legislative functions of the U.S Congress is the power to investigate. This power is usually delegated to committees-either standing committees, special committees set for a specific purpose, or joint committees (1)________ consisted of members of both houses. Investigations are held to 　 　(2)________ gather information on the need for future legislation, to test the effectiveness of laws already passed, to inquire into the qualifications and performance of members and officials of the other branches, and in rare occasions, to lay the groundwork for 　　(3)________ impeachment proceedings. Frequently, committees rely outside experts (4)________ to assist in conducting investigative hearings and to make out detailed studies of issues.　　　　　　　　　　　　　　 (5)________ There are important corollaries to the investigative power. One is the power to publicize investigations and its results. Most 　 (6)________ committee hearings are open to public and are reported widely in　　 (7)________ the mass media. Congressional investigations nevertheless represent (8)________ one important tool available to lawmakers　to inform the citizenry and to arouse public interests in national issues. Congressional (9) ________ committees also have the power to compel testimony from unwilling witnesses, and to cite for contempt of Congress witnesses who refuse to testify and for perjury these who give false testimony. 　　　　　(10)________