A：胚和胚乳
B：胚芽和胚乳
C：子叶和胚乳
D：种皮和胚
根据Jack的日程表，完成选择填空。
Mon
4:00-5:00pm
swimming class
Tue
7:00-9:00pm
meet Sam at his house
Wed
10:00-12:00am
Thu
10:00am
go to the airport to meet Mike
Fri
12:00-5:00pm
part-time job
Sat
10:00-10:30am
visit Uncle David at People's Hospital
birthday party for Tom
Sun
12:00-6:00pm
尺规作图所用的作图工具是指（ ）
“风声、雨声、读书声，声声入耳；家事、国事、天下事，事事关心”这幅对联启示我们（ ）
下列关于经线、纬线的说法，正确的是（ ）
