Space Shuttle Project is one of the first huge-typed spaceflight instruments used for many times in the world, organized by American National Aviation andSpaceflight Bureau, the main researches of (1) are researching and making the system of space shuttle, suggesting and choosing (2) and landing ports,deciding the scheme of reclaiming the roll booster of solid rocket, (3) the establishment of repairing the roll booster, and rebuilding and expanding the building of the (4) and controlling system.At the beginning of 1969, the United States set up a group that specially researched the development direction of spaceflight with(5) for the next stage, (6) by deputy president. After (7) and research, it suggested that an aerocraft with great benefits in (8) should be made, eg (9) the spaceflight being its leading stanchion. In this project, five orbit implements were prescribed to be made,
(10) " Exploit
A. labeling
B. hauling
C. hawking
D. launching
Space Shuttle Project is one of the first huge-typed spaceflight instruments used for many times in the world, organized by American National Aviation andSpaceflight Bureau, the main researches of (1) are researching and making the system of space shuttle, suggesting and choosing (2) and landing ports,deciding the scheme of reclaiming the roll booster of solid rocket, (3) the establishment of repairing the roll booster, and rebuilding and expanding the building of the (4) and controlling system.At the beginning of 1969, the United States set up a group that specially researched the development direction of spaceflight with(5) for the next stage, (6) by deputy president. After (7) and research, it suggested that an aerocraft with great benefits in (8) should be made, eg (9) the spaceflight being its leading stanchion. In this project, five orbit implements were prescribed to be made,
(10) " Exploit
A. what
B. which
C. where
D. that
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