When a spacecraft travels, one of the major problems is reentry into the Earth’s _______.
atmosphere
举一反三
- When a spacecraft travels, one of the major problems is re-entry into the Earth's _______. A: surface B: atmosphere C: attitude D: bent
- When did the first manned spacecraft leave earth for the moon
- 地球上人口飞速增长是人类面临的重大问题之一。 A: That the population on the earth is increasing rapidly is one of the serious problems that mankind faces. B: What the population on the earth is increasing slowly is one of the serious problems that mankind faces. C: What the population on the earth is increasing rapidly is one of the serious problem that mankind to face.
- If one wants to deal with problems fairly, one should try to avoid being _____ when looking at these problems.
- One million of the earth’s eight million species are in danger.( )
内容
- 0
In Doctor Who, which one is NOT on the list of numerous reoccurring enemies during the Doctor’s travels?
- 1
Could mother Earth feel sharp pain when herdsmen settled down one place?
- 2
Both meridian and parallel of latitude will form an ellipse when the earth ellipsoid makes one turn.
- 3
____ is known to everybody ,the moon travels round the earth once every month.
- 4
The process of urbanization has caused many problems, the major one is （） A: economy B: the growth of poverty in cities C: education D: health care