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【单选题】下列有关存储器读写速度快慢排列顺序正确的是
A.
RAM > Cache > 硬盘 > 光盘
B.
Cache > RAM > 硬盘 > 光盘
C.
Cache > 硬盘 > RAM > 光盘
D.
RAM > 硬盘 > 光盘 > Cache
【单选题】刘某，68岁，6年前开始出现智力下降、记忆力衰退，常会丢三忘四，外出迷路，下列哪项是防止他走失的最好措施
A.
注意保护病人，免受外界不良因素的影响
B.
规定其出门时间
C.
限制其活动范围
D.
出门时要尽量陪伴，并在衣着内做好标记
E.
规定其睡眠时间
【单选题】刘某,68岁,6年前开始出现智力下降、记忆力衰退,常会丢三忘四,外出迷路,下列哪项是防止他走失的最好措施?
A.
限制其活动范围
B.
规定其出门时间
C.
注意保护病人,免受外界不良因素的影响
D.
规定其睡眠时间
E.
出门时要尽量陪伴,并在衣着内做好标记
【单选题】He can't find money for life necessities，_____ such luxuries as wine and tobacco .
A.
leave alone
B.
let alone
C.
let well along
D.
leave well alone
【单选题】We can learn from Paragraph 2 that______.
A.
there's no obvious connection between red wine and people's health
B.
drinking 15-ounces red wine can do good to women's health
C.
a cholesterol in red wine can form. fatty deposits in arteries
D.
an ingredient in red wine may prevent heart attack
【单选题】If each worker in the United States can producer either 40 bottles of wine or 40 yards of clothing per hour and each worker in the United Kingdom can produce either 20 bottles of wine or 10 yards of c...
A.
the United Kingdom has the absolute advantage in both products.
B.
the United Kingdom has a comparative advantage in wine production.
C.
the United States has a comparative advantage in wine production.
D.
Neither country can benefit by trading with the other.
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