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【简答题】
在日常生活中，同学们常常见到下列一些变化，其中属于物理变化的是（ ） A．衣橱中放置的卫生球逐渐变小，最后消失 B．菜刀生锈 C．食物腐败 D．天然气燃烧
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【简答题】影响项目施工质量的五大因素是什么?
【单选题】Please choose the sentence in which the comma has been placed in the right place.
A.
The author has written several books about food allergies so, it's safe to say she's an expert on the subject.
B.
The author has written several books about food allergies, so it's safe to say she's an expert on the subject.
【单选题】Please choose the sentence in which the comma has been placed in the right place.
A.
Benjamin found the instructions difficult to understand, so he asked Mr Wilson to explain them.
B.
Benjamin found the instructions difficult to understand so, he asked Mr Wilson to explain them.
【简答题】影响工程质量的五大因素是（）因素、（）因素、（）因素、（）因素、环境因素。
【单选题】Please choose the sentence in which the comma has been placed in the right place.
A.
Colette was not satisfied with the play, so she added two new scenes.
B.
Colette was not satisfied with the play so, she added two new scenes.
【多选题】Please choose the answers for "How are you feeling today?" which means "Not so good."
A.
A bit better.
B.
I feel a bit low.
C.
I feel a bit sad.
D.
I feel awful.
E.
I feel OK.
F.
I feel a bit down.
【单选题】Please choose the most appropriate translation for the following sentences. The parts must be very strong so that they may not beak in use.
A.
这些部分必须十分坚固以至于使用时不会折断。
B.
零部件必须十分坚固，才不会在使用中破损。
C.
坚固的零部件不会在使用中破损。
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