40. Who earns most according to the text?
   A. A social worker.                 B. A fireman.                C. A gardener.               D. A teacher.
41. We learn from the text that looking after children ______.
   A. takes more time than doing any other housework     B. means more duties than being a teacher
   C. requires the mother to be well-educated                   D. prevents the mother from working outside
42. According to the text, a housewife with a baby less than one year old may work _____.
   A. 66 hours a week      B. 71 hours a week              C. 80 hours a week      D. 90 hours a week
43. By mentioning her husband, Karen Williams wants to show that ______.
   A. housework is no easy job                                B. her husband has no time to clean the kitchen
   C. a housewife needs to be paid for cleaning         D. the kitchen is hard to clean
C
Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch. They may think that eating lunch is the cause of the sleepiness. Or, in summer, they may think it is the heat. However, the real reason lies inside their bodies. At that time – about eight hours after you wake up – your body temperature goes down. This is what makes you slow down and feel sleepy. Scientists have tested sleep habits in experiments where there was no night or day. The people in these experiments almost always followed a similar sleeping pattern. They slept for one long period and then for one short period about eight hours later.
In many parts of the world, people take naps (小睡) in the middle of the day. This is especially true in warmer climates (气候), where the heat makes work difficult in the early afternoon. Researchers are now saying that naps are good for everyone in any climate. A daily nap gives one a more rested body and mind and therefore is good for health in general. In countries where naps are traditional (传统的), people often suffer less from problem such as heart disease.
Many working people, unfortunately, have no time to take naps. Though doctors may advise taking naps, employers do not allow it! If you do have the chance, however, here are a few tips about making the most of your nap. Remember that the best time to take a nap is about eight hours after you get up. A short sleep too late in the day may only make you feel more tired and sleepy afterward. This can also happen if you sleep for too long. If you do not have enough time, try a short nap – even ten minutes of sleep can be helpful.
44. Why do people feel sleepy in the early afternoon according to the text?
   A. They eat too much for lunch.                          B. They sleep too little at night.
   C. Their body temperature becomes lower.            D. The weather becomes a lot warmer.
45. If you get up at 6:30 am, what is the best time for you to take a nap?
   A. About 12:30 pm.        B. About 1:30 pm.         C. About 2:30 pm          D. About 3:30 pm
46. What would be the best title for the text?
A. Just for a Rest                                             B. All for a Nap
C. A Special Sleep Pattern.                                D. Taking Naps in Warmer Climate.
 
D
Five million people visit Grand Canyon in the US every year. For the purpose of helping project Grand Canyon for your fellow visitors and future generations, please follow the guidelines below.
Camping
To project the park, camping is allowed only within permitted campgrounds. Permits are required for overnight camping at the North Rim. Advance booking can be received by mail. Please write: Information Center, P.O. Box 129, Grand Canyon, AZ 86023
Fires
Because of the extreme fire danger, campfires are not allowed except at Mather and Desert View campgrounds. Collection of firewood is not allowed either.
Hiking(远足)
Please stay on permitted paths. Otherwise you may destroy desert plants. Pack out what you pack in, so you leave no signs of your visit. It is important to keep in mind that you are in a national park where wildlife exists.
Weather
The weather at Grand Canyon can change very quickly. With so much rock, lightning(闪电) causes a particular danger during sudden summer storms. These storms also frequently bring floods inside valleys, a danger to hikers. Watch the skies and check daily weather reports.
Wildlife
Do not feed park wildlife. There have been a few cases at Grand Canyon National Park where deer(鹿) were purposely shot because they ate plastic bags that left them sick and weak. Hungry deer can be a danger and have kicked and bitten visitors at Grand Canyon. Some other animals will also beg and bite. For your own safety and the well-being of the animals, please do not feed wildlife, no matter how gentle they may appear.
47. What can you do first if you want to go camping?
   A. Know the permitted paths                          B. Book campgrounds in advance
   C. Make sure not to make a fire                         D. Stop at Mather and Desert View
48. What do the underlined words “pack out what you pack in” in Paragraph 4 probably mean?
   A. keep everything out of campgrounds                B. take away everything you bring in
   C. carry all the necessary food                            D. look after your personal belongings
49. Why were some deer killed on purpose at Grand Canyon?
   A. They ate wrong things and became very ill.      B. They were a danger to other gentle animals.
   C. They begged food from visitors.                      D. They kicked and bit visitors.
50. What is the main purpose of the text?
   A. To provide travel information.                        B. To report some recent news.

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