题目内容

请选出邀请某人做某事的句型？

A. What’re you going to dotomorrow evening?
B. what do you do?
C. What’re you doing on Saturday night?
D. Would you like to goroller-skatingwith me this Saturday afternoon?

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日出和日落的色温为

A.1850K
B.2380K
C.3400K
D.4500K

光强度的单位是

A.lx
B.lm
C.cd
D.nm

Mary: Hello,Robert. __1(明晚你们有安排了吗)?Robert: Tomorrow evening? _2.（没什么事情）Mary: ______3_（我们想邀请您周五晚上过来株洲吃饭）Robert: Oh, thank you. What time should I come?Mary: __4(晚上7点30分，如何？)Robert: OK. Thank you for inviting me.Mary:5_（很乐意）

物体表面被照亮的程度称之为

A.光强
B.照度
C.亮度
D.光通量