周某以公司债券出质，债券上未进行任何记载。周某按约定将债券交付给质权人。下列说法哪项

晕动病的药物治疗包括 __________ 、 __________ 和 __________ 等。

体液浓度失调导致()

A．细胞内液量的改变

B．细胞外液量的改变

C．体液量的改变

D．渗透压保持恒定

E．渗透压发生改变

The space shuttle Discovery has had a long and busy career. For 27 years, it has worked for NASA, carrying astronauts to space and back on 39 missions. On March 9, 2011, after returning from its final voyage, the world’s most traveled spaceship was retired.

A crowd of shuttle workers, reporters and schoolchildren waited to greet Discovery at Kennedy Space Center in Cape Canaveral, Florida. Three minutes before noon, they watched as the shuttle appeared in the sky and made one last touchdown. “For the final time: wheels stop,” Discovery’s commander Steven Lindsey said when the shuttle rolled to a stop.

Discovery’s final trip was to the International Space Station (ISS), a giant space lab in the sky. Discovery’s crew took care of the last U.S. construction project at ISS. They delivered 10 tons of supplies for the ISS. The six-person crew also dropped off an unusual companion for ISS’s researchers: a human-like robot named Robonaut 2. Astronauts will assemble（组装）R2 at the ISS over several months.

Now, NASA is winding down its shuttle programme. NASA is to begin work on new spaceships that can travel longer distances. Discovery’s retirement is the first of three. Endeavor, another shuttle, is scheduled to make its final voyage soon. And Atlantis’s last trip is planned for the end of June.

Museums across the country have requested the retired shuttles. The Smithsonian’s Air and Space Museum, in Washington, D.C., was the lucky recipient（接收者）of Discovery. The museum’s collection contains hundreds of NASA artifacts.

Where will the other shuttles go? You’ll have to wait to find out. NASA will announce its decision on April 12, the 30^th anniversary of the first space shuttle launching. Stay tuned!

小题1:As part of the final mission, Discovery’s crew___________.

A．carried researches to space

B．assembled the Robonaut 2 at the ISS

C．brought supplies to the ISS

D．went on a spacewalk小题2:The underlined phrase “winding down” in Paragraph 4 probably means _________.

A．improving

B．ending

C．changing

D．testing小题3:What can we infer from the text?

A．Discovery completed 39 missions during its two decades of space travel.

B．The ISS is a big project and six researchers live on the station.

C．American space exploration will focus on longer missions.

D．The shuttles Endeavor and Atlantis will make their last missions next month.小题4:According to the text, we can learn about ___________.

A．people’s opinions of Discovery’s retirement

B．the government’s concern about the shuttles’ future

C．the shuttles’ final homes after retirement

D．museums’ great interest in the retired shuttles

契约型基金是通过基金章程来规范当事人行为的

根据义务教育法实施细则的要求，直接实施初等义务教育有困难、需要分两步实施的，应如何办理？