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【单选题】
宇宙不仅是物质的世界，也是运动着的世界，下列有关地球运动的说法，正确的是：A.
地球自转方向是自西向东，公转的方向是自东向西
B.
地球的公转是指地球绕着地轴的旋转运动
C.
地球公转轨道形状是正圆
D.
地球公转的速度不是匀速的，而大致是近日点公转速度最快，远日点公转速度最慢
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举一反三
【单选题】Don't just wait _____. You should try to seek for information you need. [ ]
A.
to inform
B.
to be informed
C.
for informing
D.
for being informed
【单选题】A client has been hospitalized with a diagnosis of myasthenia gravis. A friend is visiting the client during lunch. The nurse enters the room after the client recovered from choking on lunch. What sho...
A.
Instruct the client to sit at a 30-degree angle in bed when eating.
B.
Tell the client to swallow when her chin is tipped down on her chest.
C.
Remind the client to rest after eating.
D.
Encourage the client to eat alone
【简答题】The CMR convention has been ratified only by countries in（ ）．
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