As is known to us all, the first human Moon landing (happen) more than 50 years ago. But do you know that before human astronauts (send) to the Moon, some other creatures had travelled in space and circled the Moon? That honour goes to two Russian tortoises and several smaller creatures went along for the ride.
On 14 September 1968. the Soviet space program sent two tortoises along some other small creatures into space for trip around the Moon. NASA calls it“ the first successful circumlunar(环月的)mission (carry) out by any nation". After the travel, the tortoises (eventual) returned to Moscow on 7 October. Both tortoises survived the trip but not the later experiment. On 11 October 1968, the animals were dissected(解剖) (see) how their bodies were affected by the space travel. The dissection showed that "the main (structure) changes in the tortoises were caused by a lack of food rather than the space travel". The tortoises had lost about 10 percent of their body (weigh), but they had stayed active and shown no loss of appetite(胃口).
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angle; conceivable; sneeze; straightforward; fetch; invisible |
L=Lily P=Peter
L: Peter, this morning, I learned from a magazine that China's Chang'e 5 lunar probe successfully returned with samples from the Moon in 2020.
P: Yes. The successful return (被认为是一个很大的进步)in humans' space exploration.
L: I can't agree more. And because of that, China became the third country in the world to bring the samples back from the Moon.
P: You said it, and (人们相信那些样本可以帮助科学家们 更多地了解月球的起源和形成)。
L: You're right. Actually, it's said that (中国不但自己研究那些样本，还把一些送给了其他国家)。
P: I think it's really a great idea. (月球属于全世界是不言而喻的)。Just as one expert says, international cooperation is one of the best ways to carry out scientific research, so China is willing to share its achievements with other countries.
