The United States (has sent) several (spacecrafts) into orbits (around the earth) and has collected a lot of (information)（）
A: has sent
B: spacecrafts
C: around the earth
D: information
A: has sent
B: spacecrafts
C: around the earth
D: information
举一反三
- While ____ the sun, the satellite has sent more than four billion bits of information back to earth.
- The money will be used to keep a space vehicle on the moon busy ______ back to the earth photographs and other information about the surface of the moon. A: to send B: being sent C: to be sent D: sending
- Which of the following claims is irrefutable？（ ） A: Anyone who believes in God can feel His presence. B: This year, the United States has a larger population than Brazil. C: The Earth is larger than the Moon. D: Pluto does not orbit around the Sun. E: none of the above
- Not only the USA and Russia but also China _______ manned satellites to circle the earth. A: has sent up B: has been sent up C: have sent up D: have been sent up
- I insist that a doctor ______ immediately. A: has been sent for B: sends for C: will be sent for D: be sent for