A recent survey of 2000 parents in Britain showed that t Wap版

试题详情及答案解析

A recent survey of 2000 parents in Britain showed that they are often afraid of science questions asked by their curious children only because they have no idea what the answer is. Here is a list of some simple questions that you can ask your parents to see if they know the answers.
Q: Why is the sky blue?
A: You probably know white sunlight is made up of seven colors. While it moves in a straight line when going through space, it starts to divide as it hits “raised area” in the atmosphere. The ones with longest wavelengths pass through easily. The blue , however , can be taken in by the gas molecules (分子) because it has a shorter wavelength , which in turn scatters (使分散) it in different directions. That’s why when you look up at the sky, it appears to be blue.
Q: Why does the moon sometimes appear during the daytime?
A: The simple answer to that is because just like any other object it is being lit (照亮) by the sun. As long as it is around 45 degrees or even 90 degrees off the sun, it will receive light and be able to be seen. The only time it is not able to be seen during its 28-day orbit (轨道) around the earth is when it is right between the earth and the sun. That’s because its back , which is not lit by the sun, is facing us.
Q: Where do birds/ honeybees go in winter?
A: While the bird part is quite easy, since a lot of them get together and travel, the honeybee part is likely to puzzle your parents. It turns out that these busy insects stop being that active when the temperature drops below 50°F. Instead ,they get together in the lower central area of the hive（蜂巢）and form a ball around their queen. This helps keep both warm enough to survive the cold winter months.
【小题1】The sky looks blue mainly because the color blue in the sunlight_______.

A．has the longest wavelength among all the colors

B．cannot be taken in by the gas molecules

C．doesn’t hit “raised area” in the atmosphere

D．cannot pass through space successfully

【小题2】How long can’t the moon be seen during the daytime in a month?

A．2.

B．28.

C．30.

D．31.

【小题3】What do honeybees choose to do when the temperature drops below 50°F?

A．They choose to be active in the wild.

B．They choose to keep themselves warm.

C．They choose to travel to a warm place.

D．They choose to get together in the upper central area of the hive.

【小题4】What is NOT explained in the passage?

A．Why is the sky blue?

B．Why is the moon able to be seen during the daytime?

C．Why do birds travel in winter?

D．Where do honeybees go in winter?

答案：

试题分析: 本文是在讲许多父母害怕被孩子问到一些科学问题，下方列举一些父母所不知道的问题，你可以问问你的父母知道吗？
【小题1】细节理解题。根据第三段提到的While it moves in a straight line when going through space, it starts to divide as it hits “raised area” in the atmosphere当他穿过太空时，被分开，The ones with longest wavelengths pass through easily. The blue , however , can be taken in by the gas molecules (分子) because it has a shorter wavelength , which in turn scatters (使分散) it in different directions.其它的颜色可以穿过太空而蓝色不波长短，被分开。所以选D项。
【小题2】细节理解题。根据第五段提到The only time it is not able to be seen during its 28-day orbit (轨道) around the earth is when it is right between the earth and the sun在其28天轨道(轨道)在地球是地球和太阳之间这时候恰好是我们是看不到的，所以28天是看不到的。所以选B项。
【小题3】细节理解题。根据最后一段提到Instead ,they get together in the lower central area of the hive （蜂巢）and form a ball around their queen. This helps keep both warm enough to survive the cold winter months他们会聚集在蜂巢转成一个球以蜂后为中心，这样让他们保暖以过冬。所以选B项。
【小题4】细节理解题。根据文中提到Q: Why is the sky blue? Q:Why does the moon sometimes appear during the daytime? Q: Where do birds/ honeybees go in winter?这三个问题，所以没有提到C项。
考点：日常生活类短文阅读。

2015届江苏江都武坚中学九年级上期中英语试卷（带解析）