同一等高线上____ 相同，等高线越密集，坡越____  ；越稀疏，坡越____ 。

根据汉语或所给词的正确形式填空。
He usually takes a ____ (淋浴) after he gets up.
Are there any____  (警察) in the street?
Koalas sleep ____ (在……期间) the day and get up at night.
Don't be____ (懒惰的) ! You must work hard.
 Mr. Green is a good teacher. He ____  (教) us music.
Does Molly enjoy_____ (read) magazines?
There____ (be) some fruit on the table.
 It's 5:30 now. The children____ (clean) the classroom.
Our teacher is very____ (friend) to us. We all love her.
This kind of animals likes to eat____  (leaf).

某同学每天早晨在上学路上习惯观察天空中的太阳，如图所示。若a，b为该同学在40°N的两个不同日期的7:00（北京时间）经过P点所看到的太阳在天空中的位置。图中SN为南北方向，PQ垂直于SN。据此回答下列各题。