皮皮学，免费搜题
登录
搜题
【单选题】
"There is no such thing as a free lunch." This expression meansA.
no decision is cost-free.
B.
if Jan and Jim go out to eat lunch, one of them must pay for the lunch or the restaurant will call the police.
C.
while some actions involve a cost, others do not.
D.
that scarcity exists in some situations, but does not in others.
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】You shouldn't take photos if you see ________. [ ]
【单选题】You look too tired. You rest and work too much. [ ]
A.
should; should
B.
shouldn't; shouldn't
C.
shouldn't; should
D.
should; shouldn't
【简答题】下列关于谥号的说法正确的是()。A. 西汉开始有谥号 B. 景、烈、昭是表示褒义的 C. 哀、怀、愍是表示同情的 D. 炀、灵、幽是表示贬义的
【多选题】What shouldn't you do when a player is about to play?
A.
You shouldn't stand close to the ball.
B.
You shouldn't stand directly behind the ball.
C.
You shouldn't remain silent.
D.
You shouldn't stand directly behind the hole.
【简答题】I told you that you shouldn't waste your time playing the computer s, _____? A. didn't I B. did I C. should you D. shouldn't you
【单选题】You are too tired .You ______ rest and you ______ go to the movies. [ ]
A.
shouldn't; should
B.
should; should
C.
should ; shouldn't
D.
shouldn't; shouldn't
相关题目：