Questions 0001 Industrial diamonds ------------ hard materials. (A) are used to cut (B) are used...
Questions 0006 -------------------------- , dahlias are stocky plants with showy flowers that come ...
Questions 0011 A telescope improves our view of the skies, partly by forming (A) a large image th...
Questions 0016 John F. Kennedy was only forty-two when he was inaugurated as president of the U...
Questions 0021 The function of Congress is to make laws, but nowhere in the Constitution -------...
Questions 0026 A chunk of uranium the size of a softball can release more (A) energy than a train...
Questions 0031 Development in computer technology has given ----------------- of the automatic pil...