【正文】
drove our ancestors to move from the trees into the plains, and on into all possible areas and environments? The wider the spread of a species, the better its chance of the best reason for exploring space is this geic tendency to expand wherever possible. Nearly every successful civilization has explored, because by doing so, any dangers in surrounding areas can be identified and prepared knowledge, we may be pletely destroyed by the knowledge, we can lessen its effects. Exploration also allows minerals and other potential(潛在的 ) resources to be if we have no immediate need of them, they will perhaps be useful may be more than physical or techniques have been acquired through techniques may have medical applications which can improve the length or quality of our have already benefited from other spin173。off on didn’t have much waiting for the , little more than a minute after take173。 Reading (Ⅰ ) 基礎(chǔ)落實 Ⅰ .課文理解 1. Who landed on the Moon back on 21st July,1969? A. Nie Haisheng. B. Neil Armstrong. C. Fei Junlong. D. McAuliffe. 2. What was Christa? A. A teacher. B. A student. C. A researcher. D. A child. 3. What would Christa do in space? A. She would make two speeches. B. She would make two space steps. C. She would give two lessons. D. She would do two chemistry experiments. 4. Why did the world feel shocked and terrible? A. The Challenger was successfully sent up. B. The Challenger landed on the Moon. C. The Challenger circled around the Earth thirty times. D. The Challenger exploded in mid173。 Modu