My father always warns me that there is no such thing as a free lunch because we can’t get __________刷题宝

题干

My father always warns me that there is no such thing as a free lunch because we can’t get _________ for nothing．

A：something

B：everything

C：anything

D：nothing

上一题下一题 0.0难度选择题更新时间:2019-07-26 01:44:02

答案(点此获取答案解析）

A

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下列现象与氢键有关的是（）

①NH₃的熔、沸点比VA族其他元素氢化物的高

②乙醇、乙酸可以和水以任意比互溶

③冰的密度比液态水的密度小

④水分子高温下也很稳定．

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下列各组词中加点的字的读音全部正确的一组是（）

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植物工厂是利用计算机对植物生长温度、湿度、光照、二氧化碳浓度及营养液等条件自动控制，使设施内植物不受或很少受自然条件制约的生产系统。例如，近年来，日本S企业将电子产业闲置的厂房改为植物工厂，种植无菌蔬菜和水果（如图）。S企业将本土闲置厂房改为植物工厂可以( )

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用化学用语填空：

同类题5

从方框中选择适当的句子补全对话，其中有两项多余。

A: Hi, Li Xiang! ____ What are you going to do?

B: I've no idea. ____

A: I'm going to work on my uncle's farm. Would you like to go with me?

B: Yes, I'd love to. ____

A: About 8 kilometers. But we can go there by bus.

B: When shall we leave?

A: ____ It will take us about half an hour to get there.

B: ____ Then we can work there longer.

A: OK. Let's make it 6：30 then.

B: Great.

A. Where's the farm?

B. How far is it from here?

C. It will be sunny tomorrow.

D. What about you?

E. Why not make it a little earlier?

F. See you later.

G. What about seven thirty?

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