Question

There is an ancient Chinese story about a giant man named Kua Fu who chases the sun. He drains the Yellow and Wei rivers during his race and finally dies of delydration（脱水）. His failure has reminded people of the unstoppable power of the sun for centuries. And yet, scientists throughout history have tried to better understand the most important star in our sky. On Aug 12, NASA launched the Parker Solar Probe（探测器）, marking the start of its trip to the sun.

The probe itself is almost as big as a car and needed the help of a powerful rocket to escape Earth’s orbit, change direction and reach the sun. In order to reach the sun, the probe must complete seven flybys of Venus, using the power of the planet’s gravity to change its path, sending it toward the sun. But that’s not the only difficult part of the journey. As the probe approaches the sun’s corona（日冕）, it will have to bear temperatures reaching 1,400℃, as well as deal with serious radiation. So how will the probe survive?

According to NASA, a special shield has been used, which is a special 11.5 cm-thick carbon-composite shield that will be positioned between the probe and the sun’s corona. It’s advanced technology like this that will make the probe’s trip to the sun much smoother. If everything goes as planned the probe will reach a speed of 692,018 kilometers per hour as it moves around the sun, setting a new record for the fastest man-made object in history, NBC noted. It will fly close to the sun 24 times between 2018 and 2025. NBC added.

1.What is the aim of mentioning Kua Fu in the first paragraph?

A. To tell the origin of Parker Solar Probe.

B. To lead to the topic of researching the sun.

C. To show the achievement of ancient China.

D. To show the difficulties of studying the sun.

2.How many challenges will the probe meet to reach the sun?

A. One.    B. Two.

C. Three.    D. Four.

3.What is the main idea of the third paragraph?

A. The probe will reach the sun in 2025.

B. The probe has been protected very well.

C. The probe is the fastest man-made object.

D. The probe has been prepared well for its aim.

4.What may be the best title of the passage?

A. Taking a Closer Look at the Sun

B. Discovering the Unknown Puzzles

C. The Story of Kuafu Chasing the Sun

D. The Scientific Value of Searching the Sun

Answer

1. B

2. C

3. D

4. A

【解析】

本文为说明文。古有“夸父逐日”的故事，从古至今人们对于太阳的探索也从未止步。近日，美国国家航空航天局发射了帕克太阳探测器，开始了长达7年的探日之旅，人类“逐日”梦想终于要实现了。

1.推理判断题。文章一开始提出夸父追日失败。接着下文叙述他的失败，警示人们太阳势不可挡的力量。然而，从古至今人们对于太阳的探索也从未止步。8月12日，美国美国国家航空航天局发射了帕克太阳探测器，开启了探日之旅。由此可知，第一段提出夸父追日的目的就是引出研究太阳的话题。分析选项可知B项符合题意，故选B。

2.细节理解题。根据第二段中的“In order to reach the sun, the probe must complete seven flybys of Venus, using the power of the planet’s gravity to change its path, sending it toward the sun. But that’s not the only difficult part of the journey. As the probe approaches the sun’s corona, it will have to bear temperatures reaching 1,400℃, as well as deal with serious radiation”可知，为了接近太阳，帕克探测器需要7次飞掠金星，借助金星引力改变飞行轨道，不断靠近太阳。随着探测器不断靠近日冕，它还将面临1400摄氏度的高温和巨大的辐射。由此可知有三个难题。故选C。

3.推理判断题。第三段内容“保护罩由厚度为11.5厘米的特殊碳复合材料制成，将探测器和太阳日冕隔开。这项先进技术将会令探测器的探日之旅更为顺利。按照计划，探测器将以每小时692018千米的速度进入太阳轨道，届时将成为迄今为止速度最快的人造物体。在2018-2025年期间，帕克将靠近太阳24次”由此可知，本段主要观点是“为了接近太阳，探测器已准备就绪”，D项符合题意，是正确的。根据内容可知“在2018-2025年期间，帕克将靠近太阳24次”，故A项中的探测器将于2025年到达太阳，故A错误。根据“进入太阳轨道，届时将成为（但现在不是）迄今为止速度最快的人造物体。”而C项“探测器现在是最快的人造物体”故C项错误。本段只是说保护罩的厚度及作用，保护的如何没有提及，故B项（探测器保护得很好）也是错误的。综合分析可知D正确。

4.主旨大意题。通读全文可知，第一段是主旨段，叙述了从古至今人们对于太阳的探索从未止步。近日，美国美国国家航空航天局发射了帕克太阳探测器，开始了长达7年的探日之旅。第二段和第三段主要叙述了在接近太阳时面临的问题，以及解决的方法。文章中的“the start of its trip to the sun.”、“reach the sun”、“approaches the sun’s corona”、“fly close to the sun”等的意思均为“到达、接近太阳”，这与A项“近距离观察太阳（Taking a Closer Look at the Sun）”意义一致，故选A。