The number of permanent crew on the
International Space Station will be increased, and possibly doubled, from 2006
by providing it with an extra "lifeboat". The move, announced in Japan last week
by the ISS partner nations, means the space station crew will at last be able to
do useful scientific research. The number of crew on the ISS has been limited to three by the capacity of the Russian Soyuz capsules that would return them to Earth in an emergency. But running the ISS requires the full-time attention of more than two crew members, leaving just half the time of one of the crew free for research. This is woefully inadequate, and a NASA-commissioned report concluded in July that no meaningful research is possible with a three-person crew. NASA originally planned to replace the Soyuz rescue capsule with a seven-person "cr A. a crew of six is ideal for ISS B. now crew at the ISS don’t have adequate equipment to do research C. at present crew at the ISS do very little scientific research D. the ISS headquarters moved to Japan last week [单项选择]The number of international students at colleges and universities in the United States has increased continually for fifth year.
The Institute of International Education in New York released its annual "Open Doors" report this week. It says a record ol more than 720,000 students from other countries were studying in America during the last school year. The number was 5% higher than the year before and almost one-third higher than ten years ago. There were big increases from China, Saudi Arabia, Vietnam, Iran and Venezuela. Almost 22% of international students were Chinese, with increases especially at the undergraduate level. Together, ahnost half of all international students came from China, India and South Korea. Peggy Binmenthal at the institute says that Chinese students are now studying throughout the United States. Twenty years ago, students from China only knew of a handful of the US institutions, but now they are admitted into the US community colleges, small A. In a handful of institions B. In different kinds of institutions C. In small liberal arts institutions D. In engineering institutions 我来回答: 提交
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