VI.阅读理解 阅读下列短文，从每题A、B、C、D四个选项中，选出一个能回答所提问题或完成所给句子的最佳答案。(30分)

　　A

　　Once a week, Neil went grocery shopping. He always made a list, but he always forgot to put one or more things on the list. This used to anger him, but now he just accepted it. You’re not as sharp as you used to be, he told himself.

　　It was Friday-shopping day. He went to the $99 Store. Sometimes they had a lot of fresh produce, sometimes they didn’t. He got lucky. There were fresh packaged broccoli, carrots, onions, and squash. Also, packages of peaches, plums, and apples. He easily had enough produce to last all week, if it didn’t go bad first. The fruit and vegetables alone filled up four plastic bags. Four other bags contained other items that were on Neil’s list.

　　He drove to Albertson’s, which sold milk by the gallon(加仑) and at cheaper prices than the $99 Store. Interestingly, the price of milk had got higher in the last month. He used to buy 2 gallons of nonfat milk for $3.59. Now he was paying $4.69. Yet, the news media reports a 2-cent increase in gasoline(汽油) prices. That’s all over the news.

　　He parked his car in the carport and opened the trunk. He managed, as usual, to put all 10 plastic bags into his hands and take them upstairs.

　　“What a heavy shopping it is, ” he thought. And then he told himself: if you think it’s too heavy now, wait till you can’t drive. Wait till you can’t even walk up the stairs. How are you going to get your food then? The older you get, he told himself, the more you’d better thank the fact that you can still do all these boring chores and housework.

　　66. Neil always made ___________ before he went shopping.

　　A. a list B. a plastic bag C. a car D. a report

　　67. Neil didn’t buy ___________ at the $99 Store.

　　A. broccoli B. peaches C. apples D. milk

　　68. How much did one gallon of nonfat milk cost that day?

　　A. $3.59. B. $4.69. C. About $2.35. D. About $1.80.

　　69. How many bags of things did Neil buy?

　　A. Ten. B. Nine. C. Eight. D. Four.

　　70. What can we learn from Neil?

　　A. We should thank what we can still do. B. We should eat enough fruit and vegetables.

　　C. We all will get old one day. D. Buying cheap things can make us happy.

　　B

　　Like visible light, UV rays are energy waves released by the sun, only they cannot been seen. Some exposure (暴露) to those waves can do a body good. For example, ultraviolet B (UV-B) rays tell human skin to make vitamin D. Too much exposure can be harmful, though. Overexposure to UV rays can cause DNA problems, opening the door for skin cancer. Too much sun can also cause painful sunburns.

　　There are three different types of UV energy waves. They are UV-A, UV-B and UV-C rays. Each type moves at a different wavelength, with UV-A’s being the longest. Rays of UV-C are considered especially harmful to human beings. Fortunately, we have the ozone (臭氧) layer of the Earth’s atmosphere. It blocks out nearly all of the UV-C rays and most of the UV-B ones.

　　The moon doesn’t have much of an atmosphere, though. Back on the moon, things are more dangerous. Over the years, astronauts have planted six American flags on the moon. Some scientists think that powerful UV rays could have bleached all the colorful flags white by now. For this reason, the moon is a dangerous place to visit without protection.

　　You might think that astronauts who visit the moon would come home with terrible sunburns. That didn’t happen to Armstrong and his company. Neil Armstrong was a U.S. astronaut and the first person to walk on the moon. These astronauts all wore special spacesuits on their missions. Spacesuits were made with heavy fabrics that block out UV rays.

　　When Armstrong set foot on the lunar surface, he was wearing a see-through helmet ( 头盔) with sun shades that were made of ultraviolet-stabilized polycarbonate. It is a very tough plastic that protects astronauts’ faces from UV rays. A weaker material could put the space travelers at risk for “snow blindness” and other problems. Conditions like these arise when UV rays damage parts of the human eyes.

　　Sunscreen (防晒霜) defends us from the UV rays that do pass through the ozone layer. However, there’s really no need for an astronaut to put on sunscreen. The risk of sunburn goes way down when astronauts are inside a spaceship. Inside the International Space Station (ISS), for example, there is no need for special suits. Astronauts regularly do their work in nothing but common cotton shirts and pants. To protect them from sunburns, the ISS uses UV-blocking windows. So do most space exploration ships.

　　71. From Paragraph 1, we can know __________.

　　A. UV-B is harmful to our body B. vitamin D is good for our body

　　C. UV rays cause DNA problems D. skin cancer is caused by the sun

　　72. The underlined word “bleach” in Paragraph 3 most probably means “___________”.

　　A. 漂白 B. 伤害 C. 刺穿 D. 吹拂

　　73. Armstrong didn’t get bad sunburns mainly because ___________.

　　A. there was no UV-C ray on the moon

　　B. the moon had an ozone layer like the earth

　　C. he wore a special spacesuit and helmet

　　D. he put on enough special sunscreen

　　74. According to the last paragraph, we can learn ___________.

　　A. sunscreen plays a great role in protecting astronauts in space

　　B. astronauts have to do their work in special suits in the ISS

　　C. UV-blocking windows are regularly used on spaceships

　　D. the risk of sunburns increases when astronauts are in space

　　75. What’s the writer’s purpose of writing the passage?

　　A. To show how astronauts are protected from UV rays.

　　B. To introduce the first human who walked on the moon.

　　C. To describe the new technology used in space.

　　D. To show how we protect ourselves from sunburns.