皮皮学，免费搜题
登录
搜题
【单选题】
神舟”七号返回舱的外形看起来像一口大钟，有三吨多重，是世界上现有的最大的返回舱。为了防止飞船与大气层摩擦产生高温而燃烧，用某种特殊材料覆盖在飞船表面，这种材料应该具有的性质是 [ ]A.
良好的导电性
B.
密度较大，以增大飞船的惯性
C.
轻质防热，可承受上千摄氏度的高温
D.
质地柔软，以利于飞船的变形
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The passage is about a girl ______.
A.
who came to visit her grandfather
B.
who had been away in college and came back home
C.
who returned home later than the appointed time
D.
who ran away from home and returned
【简答题】从2009年起，我国把每年的( )月( )日定为防灾减灾日。
【简答题】Who became Buck’s new ?
【单选题】Pearl S. Buck, who won the Nobel Prize in 1938, wrote many novels about China, and the best known is
A.
The Good Earth.
B.
The Caine Mutiny.
C.
The Town.
D.
The Portrait of a Lady.