皮皮学，免费搜题
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【简答题】
张老师来家访了。妈妈让煮咖啡招待老师。煮咖啡准备做的事和时间见下表。 事件 洗开水壶 烧开水 洗咖啡杯 冲咖啡 时间（分） 2 7 2 1 估算了一下，完成这些工作要花12分钟。你能帮想个办法使老师早点喝上咖啡吗？你认为最合理的安排是怎样的？需要几分钟就能冲好咖啡？
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举一反三
【单选题】If a person adopts an unhealthy lifestyle, he will surely be ______ developing diseases.
A.
at risk
B.
at risks
C.
at risk of
D.
at risks of
【单选题】If a person adopts an unhealthy lifestyle, he will surely be developing diseases.
A.
in turn
B.
at risk of
C.
in other words
D.
on a mission
【单选题】If a person adopts an unhealthy lifestyle, he will surely be developing diseases.
A.
stand a chance of
B.
at risk of
C.
in turn
D.
inevitable
【简答题】If a person adopts an unhealthy lifestyle, he will surely be developing diseases.
【单选题】If a person adopts an unhealthy lifestyle, he will surely be developing diseases.
A.
taking a toll on
B.
dropped out
C.
held on to
D.
at risk of
【简答题】机械的周期性速度波动和非周期性速度波动各有何特点？各用什么方法加以调节？
【单选题】If a person adopts an unhealthy lifestyle, he will surely be ______ developing diseases.
A.
taken risks
B.
at risk
C.
at risk of
D.
at all risks
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