【单选题】阅读理解:According to astronomer S.A. Phinney, kicking a rock hard enough to free it from Earth's gravity would require a meteorite capable of making a crater more than 60 miles across. Moreover, even if ...
A.
Rather than going in random directions, about 25 percent of all particles ejected from Earth go in the same direction into space.
B.
Approximately 100 meteorites large enough to make a noticeable crater hit the Earth each year.
C.
No rocks of Earth origin have been detected on Mars.
D.
The velocity of rocks escaping from Earth's gravity is lower than the velocity of meteorites hitting the Earth.
E.
No craters more than 60 miles across have been found on Mars.
【判断题】Grupo Televisa S.A. is a Mexican firm listed in Mexico, with an American Depository Receipt (ADR) traded on the NYSE. The stock prices are 300 pesos in Mexico, and 30 dollars in New York; the exchange...