皮皮学，免费搜题
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搜题
【单选题】
热力学能增加的物体A.
温度一定升高
B.
一定是从外界吸收了热量
C.
可能是从外界吸热，也可能是外界对它做了功
D.
一定向外界放出热量
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】隧道可分为主体建筑物和 。
【单选题】—What beautiful shoes you're wearing! They must be expensive. —No. they only 10 yuan. [ ]
A.
spent
B.
took
C.
paid
D.
cost
【单选题】— What beautiful shoes you're wearing! They must be expensive. — No, the shoes only me 10 yuan. [ ]
A.
spent
B.
took
C.
paid
D.
cost
【单选题】—What beautiful shoes you are wearing! They must be expensive.
A.
hey only ____ 40 yuan.
B.
spent
C.
takes
D.
cost
E.
paid