问题
选择题
在下图中能够正确地表示光从空气射入玻璃中的情况的图是 [ ]
A.
B.
C.
D.
答案
答案：C
搜题请搜索小程序“爱下问搜题”
在下图中能够正确地表示光从空气射入玻璃中的情况的图是 [ ]
A.
B.
C.
D.
答案：C
| 从方框中选择适当的句子补全对话。 | |
L= Linda F=Frank
 L: Hi, Frank! 1 F: I'm going to the shop to buy a present for my mother. L: For her birthday? F: 2 L: Oh, really? 3 F: Yes, Mother's Day is on the second Sunday in May. 4 L: Good idea! She'll be happy to see my present. F: OK. 5 1._____2._____3._____4._____5._____ |