⑴Can you help me, please?____
⑵Where is my coat?____
⑶Are they pants?____
⑷Whose dress is this?____
⑸Is this your hat?____
A. No, they aren't.
B. Yes, it is.
C. It's Kate's.
D. OK.
E. It's on the bed.
如图所示,AB为⊙O的直径,CD是⊙O的弦,AB、CD的延长线交于点E,已知AB=2DE,∠AEC=20°.求∠AOC的度数.
从方框中选择适当的单词,并用正确的形式补充句子。
1. I'm ____my vacation to Italy this weekend.2.A doctor can____ you medicine.3.I have a toothache. I ____ to see a dentist.4.Grandpa is pretty healthy because he ____ every day.5.A lot of vegetables____you to keep in good health.
右图为反射弧结构示意图,相关叙述中正确的是()