一个工程队第一周修公路825米,第二周修的是第一周的2倍,第三周修的是第一、二周修的总和,第三周修多少米?
825×(2+1)=825×3=2475(米);
答:第三周修2475米.
小题1:Tom is a 12-year-old boy. If he has a headache, he should take __________ a day.
A.tablet
B.1 tablet
C.2 tablets
D.3 tablets小题2:The Public Library is closed at __________.
A.5:00 p.m.
B.9:00 a.m.
C.4:00 p.m.
D.12:00 a.m.小题3:Lin and his father want to go to the Hamilton Zoo, they should pay __________.
A.$ 15
B.$ 30
C.$ 45
D.$ 10
《素问·阴阳应象大论》"治病必求于本"之"本"指的是()
A.病机
B.病因
C.阴阳
D.根本
E.本质