题目内容

【题目】踩影子游戏(比赛谁先踩到对方的影子),你玩过吗?某天,连州某校的小红和同学在室外踩影子游戏。据此完成下面小题。

1仅从影子长短考虑,下列时间中最容易被对方踩到影子的是( )

A.上午7:00B.上午9:00C.中午12:00D.午后14:00

2一天中身影长短变化现象与( )

A.地球自转有关B.二十四节气有关C.地球公转有关D.四季更替有关

【答案】

1A

2A

【解析】

1地球人和物体的影子受太阳辐射的影响,正午太阳高度角越大,影子越短,相反,正午太阳高度角越小,影子越长,如题目所说踩影子游戏,以上四个时间点中,上午7:00的正午太阳高度角最小,影子最长,最容易被对方踩到,故选A。

2一天中影子的长短是与地球的自转运动有关,早上与晚上当太阳日出不久和即将日落时,正午太阳高度最小,影子是最长的,相反,在中午12时,正午太阳高度最大,影子最短,与公转有关的是各个季节时影子长短不同,故选A。

本题考查地球运动有关知识,要知道影子长短与地球运动的关系。

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【题目】In America, people often invite friends for a meal, a party or just coffee. People often say like these, “Would you like to come over for dinner?” “We’re having a party on Friday, can you come?” To answer an invitation, the say “Thank you” and accept, or say “Sorry” and give a reason.

Sometimes, what people say is like invitations but which are not real invitations. For example, “Please come over for a drink sometime.” “Let’s get together for lunch soon.” They are not real invitations because they don’t talk about the date or time. They just show that the person is trying to be friendly. People usually answer “Sure, that would be great.” or “OK, thank you.” So next time you hear what is like an invitation, listen carefully. Is it a real invitation or is the person just being friendly?

1In what country do people often invite friends for a meal, a party or just coffee?

_________________________________________(no more than 2 words)

2If someone says to you “We’re having a party on Friday, can you come?”, how do you answer?

_________________________________________(no more than 13 words)

3Is it a real invitation if people say “Let’s get together for lunch soon”?

_____________________________________________

4Why is the invitation “Please come over for a drink sometime.” not a real invitation?

___________________________________________________.

5Why do people say please come over for a drink sometime they don’t want to invite their friends to come?

_______________________________________________________

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