问题 综合

下图中阴影部分表示夜半球,非阴影部分表示昼半球。读图,回答下列问题。(20分)

(1)比较甲、乙、S三地随地球自转角速度和线速度的大小。(6分)

(2)比较该日乙、丙两地日出时间早晚(地方时)和昼长。(8分)

(3)为了最大限度地利用太阳能,该日丙地太阳能热水器吸热面板与水平面的夹角应当调节为________。(2分)

(4)该日南京竖直旗杆顶端日影轨迹是(4分)      (  )

答案

(1)甲、乙角速度相等,线速度甲大于乙,S既无角速度也无线速度。

(2)日出时间:乙地8时,丙地6时,乙地比丙地晚2小时。昼长:乙地8小时,丙地12小时,丙地比乙地长4小时。

(3)23°26′ (4)A

(1)结合甲、乙、S三地的纬度差异以及地球自转速度的分布规律判断。

(2)地球上任一点所在纬线的昼弧长度决定了其昼长。根据乙、丙两地昼弧跨越的经度数可以计算出其昼长,进而可计算出日出时间,从而得出该题结论。

(3)由光照图可知,南极圈内全部为极夜,为北半球夏至日,太阳直射在北回归线上;丙地在赤道上,从而可得出丙地的正午太阳高度;要使吸热面板获取的能量最多,需使太阳光线与吸热面板垂直,从而计算出吸热面板与水平面夹角的大小。

(4)夏至日南京日出东北、日落西北,正午时日影最短,从而可知日影轨迹。

阅读理解

Molly信箱是一个报刊栏目,主持人Molly回答读者提出的各种问题。第1至5题是五位读者的来信。

请从A、B、C、D、E和F中为每封来信选出最合适的回复。选项中一项是多余选项。

( )1. Dear Molly,

     I have a problem. My parents are always talking to me about studying. They want me to study harder

so I can go to a good school. I know studying is very important, but my parents put too much pressure

on me. How can I explain to my parents that I need some free time?

                                                                                                                         ------ Overworked

( )2. Dear Molly,

     My best friend Tony is a nice young man, but he has a bad habit. He is always late. No matter where

he is going to what he is doing, he is never on time. Once he turned up thirty minutes late for a meeting!

What can I do to break him of this bad habit? 

                                                                                                                         ------ Worried

( )3. Dear Molly,

     I have a new roommate named Louis. He is a good friend of mine, but he is driving me crazy because

he is very untidy. He leaves his dirty clothes everywhere, and he never makes his bed. I am extremely neat.

What can I do?

                                                                                                                        ----Unhappy

( )4. Dear Molly,

     My cousin plays computer games a lot and he keeps on talking to me about various games. I don't have

any interest at all, but I find it difficult to stop him without hurting his feelings. Would you kindly give me

some advice?

                                                                                                                        --- Shy

( )5. Dear Molly,

     I'm feeling upset these days because the result of my last English exam was not as good as I had expected. My teacher comforted me, saying "Don't worry. You can do better next time." But I'm still feeling bad. I need

your help. 

                                                                                                                        ----Disappointed

A.

B.

C.

D

E.

F.

判断题