单项选择题
A.objection B.defect C.obstacle D.depression
In general , the amount that a student spends for housi...
单项选择题In general , the amount that a student spends for housing should be held to one-fifth the total（）for living expenses.
A.acceptable B.available C.advisable D.applicable
When you go to the doctor he asks you to describe your（...
单项选择题When you go to the doctor he asks you to describe your（）so that he can make a diagnosis (诊断).
A.indications B.signs C.symbols D.symptoms
He ran so fast that he was out of（）A.airB.oxygenC.breat...
单项选择题He ran so fast that he was out of（）
A.air B.oxygen C.breath D.wind
