2010年职称英语《理工类B级》考点精粹四(18)

词汇

hypersonic/7haipE(:)5sCnik/adj.超音速的 booster/ 5bu:stE/n.助推器
equator/i5kweitE(r)/ n.赤道　milestone/5mailstEun/n.里程碑
unmanned/Qn5mAnd/adj.无人的 booster rocket 助推火箭
scramjet/5skrAmdVet/n.超音速燃烧冲压式， cargo/5kB:^Eu/n.货物
喷气发动机
combustion/kEm5bQstFEn/n.燃烧 brink/briNk/n.边缘

练习：

1. The Hyper-X broke the record because

A it was the first air-breathing jet plane.
B it flew along the equator.
C it flew at speeds smaller than five times the speed of sound.
D it traveled at a supersonic speed.