Which of the following statements is NOT the characteristics of the United States' aircraft launching some satellites？
A. This method still needs a rocket-powered launch vehicle.
B. The vehicle can pay no attention to friction with the thick atmosphere.
C. Much more fuel is needed.
D. Only smaller satellites can be launched this way.
According to the second paragraph, which of the following is NOT true？
A. The first stage of a multistage rocket consists of rocket engines that provide a large amount of force.
B. The first stage lifts the entire launch vehicle off the launch pad and into the first part of the flight.
C. After its engines use up its fuel, the first stage part of the rocket separates from the rest of the launch vehicle and falls to the space.
D. The entire launch vehicle includes its load of fuel, the rocket body, and the satellite.
Where are the speakers？
A. In the street.
B. In a hotel.
C. In a taxi.
He spoke hopefully of the success of concert.
A. 他充满希望地谈到音乐会的成功。
B. 他抱着希望说这项活动会成功。
C. 他满怀希望地谈到音乐会会取得成功。
D. 他说希望这个活动成功。
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