[填空题]With the aid of communications satellites, large newspapers, such as the Wall Street Journal and USA Today, can be printed and distributed nationwide in good time.

[填空题]With the aid of communications satellites, large newspapers, such as the Wall Street Journal and USA Today, can be printed and distributed nationwide in good time.

[单项选择]The launching of communications satellites made it possible for people in San Francisco to（）
A. get close-up views of operations
B. store knowledge
C. watch the 1964, Olympic Games in Tokyo
D. watch national programs

[单项选择]Communications satellites have __________ international live transmission of important events．
A. made it possible
B. made possible it
C. made possible
D. it made possible

[单项选择] Many ants forage across the countryside in large numbers and undertake mass migrations; these activities proceed because one ant lays a trail on the ground for the others to follow. As a worker ant returns home after finding a source of food, it marks the route by intermittently touching its stinger to the ground and depositing a tiny amount of trail (5)pheromone—a mixture of chemicals that delivers diverse messages as the context changes. These trails incorporate no directional information and may be followed by other ants in either direction. Unlike some other messages, such as the one arising from a dead ant, a food trail has to be kept secret from members of other species. It is not surprising then that ant species use (10)a wide variety of compounds as trail pheromones. Ants can be extremely sensitive to these signals. Investigators working with the trail pheromone of the leafcutter ant Atta texana calculated that one milligram
A. The mass migration of ants
B. How ants mark and follow a chemical trail
C. Different species of ants around the world
D. The information contained in pheromones

[单项选择]Communication satellites generally use solar cells as their source of electric power, although some test satellites have used thermoelectric generators.
A. superior
B. authorized
C. former
D. experimental

[填空题]Micro Communications Ltd
Finance Department
Name of Company: Pegasus Group
Name of Caller: (9) Martin ______
Account Number: (10) ______
Goods received: (11) ______ printers
Discount quoted originally: (12) ______ per cent
Correct balance due: (13) ______
Contact number: (14) 840679 extension ______
Date balance will be received: (15) ______ October