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【单选题】
如图是人体完成反射活动的神经结构示意图，下列有关该图的说法，正确的是（ ）A.
②是传出神经
B.
③是神经中枢
C.
①是效应器
D.
完成反射活动的正确传导路线是⑤④③②①
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【简答题】调质处理是指______加______的热处理工艺，钢件经调质处理后，可以获得良好的______性能。
【单选题】Our ______ sensitivity decreases with age. By age 60, most people have lost 40 percent of their ability to smell and 50 percent of their taste buds.
A.
sensible
B.
senseless
C.
sensitive
D.
sensory
【单选题】What does tile writer mean by saying 'we pay for our sensitivity' in the first paragraph?
A.
We have to take care of our sense of pain.
B.
We suffer from our sense of feeling.
C.
We should try hard to resist pain.
D.
We are hurt when we feel pain.
【单选题】What does the writer mean by saying 'we pay for our sensitivity' in the first paragraph?
A.
We have to take care of our sense of pain.
B.
We suffer from our sense of feeling.
C.
We should try hard to resist pain.
D.
We are hurt when we feel pain.
【简答题】什么是调质处理?为什么调质钢的含碳量均为中碳?
【单选题】My church recently staged a Sensitivity Sunday to make our congregation aware of the problems faced by people with physical handicaps. We are asked to 'adopt a handicap' for several hours on Sunday mo...
A.
be confined to wheelchairs
B.
stuff cotton in his ears
C.
hobble around on crutches
D.
wear blindfolds
【单选题】Our ______ sensitivity decreases with age. By age 60, most people have lost 40 percent of their abilities to smell and 50 percent of their taste buds.
A.
sensible
B.
senseless
C.
sensitive
D.
sensory
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