On the night of July 6, 1943, a plane took off from an Air Force base in England to intercept German fighters over the English Channel. Piloting the plane was Captain Thomas Nash. Looking westward, Nash saw twelve orange lights in a row, moving at a fantastic rate of speed. An old experienced flyer, he had never seen anything like them. Thinking they might be a new German weapon, he decided to give chase. But when he swung the plane around and headed directly for the lights, they disappeared. Captain Nash may have been the first to see such orange lights but he wasn't the last. His experience was repeated many times by pilots during World WarIIboth in Europe and the Far East. Pilots in the Korean War also reported seeing the strange lights. What were they? No one knows for sure, but there is an interesting theory to account for them. According to this theory, the orange lights are space animals -- animals specially adapted to life in the upper atmosphere just as some creatures are adapted to life at the bottom of the sea. These space animals, the theory says, live so far up in the atmosphere that they are not visible from earth. They feed partly on the air and partly on energy from sunlight. Being almost pure energy themselves, they can adjust their bodies to glow at night. During the day they become invisible. Before World War II, continues the theory, there was little radiated energy available on the earth's surface. Then came the development of rockets, atomic reactors , and hydroelectric plants . The space creatures are attracted to these sources of energy of food. At night when there is no energy from sunlight, they go down into the lower levels in search of a meal. They may even drift into the range of human eyesight. This explains the fact that they have been sighted regularly from the earth since 1943. If the space animal theory is correct,the creatures go down to the lower regions in order to _ . A) escape being discovered B) cause curiosity C) search for man-made energy D) make contact with man
C
(Question)
Jungle country is not friendly to man,but it is possible to survive there. You must have the right equipment and you must know a few important things about woodcraft . Then your chances of staying alive are very good. No one should go into the jungle without the right equipment. You need lightweight clothing, a good knife, and a compass. Fishhooks and a line,a rifle,matches in a waterproof container and a poncho are necessary too. So is a mosquito net to protect the head. In the jungle you can get hopelessly lost within five minutes after leaving known landmark . That is why you should always carry a compass. In open country during the day, you can tell which way to go by studying the sun. At night the stars are sure guides to direction. But in most places the jungle rooftop is so thick that it is impossible to see the sun or the stars. Again and again you must check your position by the compass. Keep alert . Watch the ground in front of you carefully. Stop and listen now and again. Avoid haste , and rest often. In a place that is hot and humid , the person who sets a fast pace will soon become tired. A steady and even pace is wisest in the long run. If you lose your way, don't panic. Try to decide how long it has been since you were sure of your position. Mark the spot where you are with blazes on a tree. Put them on four sides of the tree, so that you will be able to see them from any direction. Then you can beginretracing your steps(going back exactly the way you have come), knowing that you can always find the spot from which you started. Except in an emergency, never try to travel the jungle at night. Whenever possible, _ that are going in your general direction. This may cause you many extra miles of travel. But in the end it will save time and energy. Nothing is moreexhausting(extremely tiring) thanhacking(cutting) a way through unbroken jungle. Surviving in the jungle is a science. The jungle people have become perfect in this science, and you can too. Learn as much as you can about what to expect... "It is wise to follow streams and rivers", which will ensure you to _ . A) avoid animals' attacks B) save many extra miles of travel C) avoid hacking a way through unbroken jungle D) have a rich supply of drinking water
(Answer)
C
Ques:In Britain, it's bottoms up from the week before Christmas till the last firework explodes in the sky announcing the new year. The last Friday before Christmas, popularly known as 'Mad Friday', is one of the busiest periods for the country's pubs and clubs. But it's not just the bars that get busy. Ambulances and A&E departments around Britain get packed out too. Head injuries, cuts, falls...it's easy to end up hurting yourself or others when self-control disappear and your head is spinning due to alcoho1 revelers have been warned by the health authorities about the dangers of deadly drinking but drinking crazily seems to be part of the festivities for some. The charity Alcohol Concern is running a campaign of restriction by encouraging people to have a dry January. Jackie Ballard, the charity's Chief Executive, believes the campaign has been successful in recent years. She says, "More than two-thirds of people even six months later are drinking at reduced levels having had a month off drink. But also a study has shown the impact it has on people's health reducing their blood pressure and blood sugar levels." The study by the University of Sussex followed up nearly 900 participants in Alcohol Concern's Dry January campaign and found out that 72%of them had kept harmful drinking sessions down and 4%were still not drinking. Moderation seems to be the key to everything. The official recommendation for women is not to regularly drink more than 2 to 3 units of alcohol a day. The limit for men is 3 to 4 units of alcohol -- no more than a pint of 5.2%ABV lager, beer or cider. The last Friday before Christmas is called 'Mad Friday' because _ . A) people stay up too late B) people go out and drink a lot C) firework explodes in the sky D) people go shopping madly

Ans:
B