The captain urged that the mission ______ bef...

The captain urged that the mission ______ before dark.

A. must be finished  B. be finished   C. ought to be finished   D. was finished

高三英语单项填空中等难度题查看答案及解析

The captain urged that the mission ______ before dark.

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They urged that measures _______ immediately to protect the endangered animals.

A. should take               B. must be taken           C. would take               D. be taken

高三英语单项填空中等难度题查看答案及解析

Don’t act before you have a second thought about the mission_____ you are unable to handle any potential emergency.

A.as long as B.so that C.even if D.in case

高三英语单项填空中等难度题查看答案及解析

We ________ jump to conclusions before we have all the facts.

A．couldn't　 B．mightn't　 C．shouldn't　 D．mustn't

高三英语单项填空中等难度题查看答案及解析

The Apollo Missions

“That's one small step for a man. One giant leap for mankind.”

— Neil Armstrong

Apollo’s Goals

The national effort that enabled Astronaut Neil Armstrong to speak those words as he stepped onto the lunar surface fulfilled a dream as old as humanity. Project Apollo’s goals went beyond landing Americans on the moon and returning them safely to Earth.

Apollo 13

Apollo 13 has been called a “successful failure,” because the crew never landed on the Moon, but they made it home safely after an explosion crippled their ship. When the associated heater was turned on during flight, the tank exploded depleting almost all of the power from the command module and forcing the crew to use the lunar module as a lifeboat. Jim Lovell, Fred Haise and Jack Swigert came home safely thanks to the mission control team’s improvised procedures and their own ability to implement them.(Launch: April 11, 1970; splashdown: April 17)

Apollo 14

Notable for the return of America’s first astronaut, Alan Shepard, to space, Apollo 14 also was probably the smoothest lunar landing to that point. The crew spent more than nine hours outside the lunar module and set up a number of experiments. Shepard set a new distance record by walking more than 9,000 feet on the lunar surface, pulling a hand cart to carry their tools and samples.(Launch: Jan. 31, 1971: lunar landing: Feb. 5: splashdown, Feb. 9)

Apollo 15

For the first time, humans drove a car on the Moon. The first of the Apollo “J” Missions-designed for longer stays on the Moon - the mission carried a lunar rover, which Commander David Scott and Lunar Module Pilot James Irwin used while they were on the surface for more than I8 hours. They traveled more than 17 miles in the rover, setting up experiments and collecting 170 pounds of samples. Before leaving the lunar surface, Scott conducted an experiment to test Galileo’s theory that objects in vacuum, without air resistance, would fall at the same rate. He dropped a geological hammer and a feather, which hit the ground at the same time, proving Galileo right.(Launch: July 26, 1971, lunar landing: July 30: splashdown: Aug. 7)

1.Why has Apollo 13 been called a “successful failure”?

A.Apollo 13 finally exploded as planned in space.

B.All the crew succeeded in landing on the Moon.

C.The crew managed to escape from a severe accident and returned to Earth.

D.The crew finished the experiment although they failed to land on the Moon.

2.Which of the following is True according to the passage?

A.It took five days for Apollo 14 to reach the Moon.

B.The lunar rover was used as a lifeboat for space travel.

C.Shepard tested Galileo’s theory successfully on the Moon.

D.Apollo 15 remained in space for the shortest period of time.

3.Which of the following column is this article most likely to be found?

A.Booming Science B.Exploring the Unknown

C.Mechanical World D.Transforming Moon

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Environmentalists urged that more effective measures ___________by the government to reduce the pollution.

A．were taken        B．would adopt       C．be adopted        D．should take

高三英语单项填空中等难度题查看答案及解析

President Hu Jintao urged that every effort ________to rescue and treat the injured when the earthquake happened in Sichuan this year.

A. is made          B. must be made      C. should make      D. be made

高三英语单项填空困难题查看答案及解析

They urge the local government that the problem ________ as soon as possible.

A. handles         B. could be handled

C. must be handled   D. be handled

高三英语单项填空中等难度题查看答案及解析

182. To the sea captain’s surprise, he found that      travel could also be quite pleasant.

高三英语单项填空简单题查看答案及解析