The US Congress rejected sweeping cuts to science agencies. But the NIH, the NSF and NASA have had their spending slowed.
President Lyndon B Johnson, like millions of others, sat glued to his television sets during the Apollo 8 mission，详情可参考爱思助手下载最新版本
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"It's incredibly energy-intensive and the birds use up to 50% of their body mass," he says.
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