Are you taking a summer vacation this year? If you are, have you already started preparing for your trip? Online, there are a large number of preparation tips available for summer travelers. While preparation advice and tips may be of assistance to you, they are often hard to go by. This is because not everyone spends vacations at the same location. No matter what your vacation destination is, you will need to take the climate into consideration. If you are visiting a tropical location, you will need to bring along the appropriate clothing. While you may be expecting warm and sunny weather, it is still advised that you prepare for the worst. Raincoats and an umbrella may be a great addition to your summer clothing. Perhaps, the most popular summer vacation destination is the beach. Each year millions of individuals and families flock to beaches. When vacationing at the beach, it is important that you bring along proper clothing and sunscreen. Many vacationers do not realize the dangers of sunbathing without sunscreen. In addition to sunscreen, you will need to make sure that you have beach towels and plenty of water on hand. For the most part, if you forget to bring along certain supplies you can purchase replacements. Many popular vacation destinations have inflated prices. To prevent unnecessary expenses, you are encouraged to check your luggage before you leave. In addition to the above mentioned preparation tips, you must inform friends and family of where you are going. In case something happens back home, you can easily be reached. As for the preparation advice and tips online, _ . A) they are useful as well as practical B) they are designed to cheat travelers C) they may make you puzzled in a way D) they can include all the destinations
C
Pollution is reducing the fragrance of plants and thus preventing bees from pollinating them--endangering one of the most essential cycles of nature, a new study suggests. The potentially hugely significant research, funded by US National Science Foundation, has found that gases mainly formed from the emissions of cars prevent flowers from attracting bees and other insects to pollinate them. And the scientists who have conducted the study fear that insects' abilities to drive away enemies and attract mates may also be disturbed. Professor Jose Fuentes, who led the study, said, "Scent molecules produced by flowers in a less polluted environment could travel for roughly 1,000 to 1,200 meters. But today they may travel only 200 to 300 meters. This makes it increasingly difficult for bees and other insects to locate the flowers." The researchers, who worked on the molecules of snapdragons ,found that the molecules are volatile and quickly bond with pollutants, mainly formed from vehicle emissions. This chemically changes the molecules so that they no longer smell like flowers. A harmful cycle is therefore set up where insects struggle to get enough food and the plants do not get pollinated enough to multiply. Already bees, which pollinate most of the world's crops, are in such a great decline that has never been known before in Britain and across much of the globe. At least a quarter of America's 2.5 million honey bee colonies have been mysteriously wiped out by colony collapse disorder(CCD),where hives are found suddenly deserted. The crisis has now spread to Europe. Politicians insist that CCD has not yet been found in Britain, but considering the present number of bees, the agriculture minister Lord Rooker has sent the warning, "The honey bee population could be wiped out in 10 years." Although the researchers are not certain whether this is the real cause of CCD, they say that pollution is making life more difficult for bees and other insects in many ways. From the passage we can know that _ . A) Europe is affected greatly by CCD B) CCD has destroyed most of the honey bee colonies in Europe C) no honey bees will be found all over the world in the near future D) European officials have paid much attention to CCD
D
Q: For some reason we were reminded that we primates need love. Kim Bard of the University of Portsmouth in England and her colleagues carried out a study on 46 baby chimpanzees orphans , which had lost their mothers. The study showed that primate babies that have tight relationships with mother figures do much better on cognitive ( ) tests than babies who only grew up with peers , but this is not breaking news. In fact, it ' s old news. In the 1950s, Harry Harlow did a series of experiments with baby monkeys that showed. that lack of love and comfort makes for a crazy monkey. Harlow constructed a cage that included a wire monkey "mother" with a plastic face. Then he equipped the "mother" with a milk bottle .The cage also had another wire "mother" who was covered with soft cloth. The baby monkeys spent all their time with the cloth "mother" arid only went to the wire "mother" to feed. Harlow's monkey experiment was important because, at the time, child care experts, and everybody's grandmother had a "no touch, no comfort" policy toward children. They advised parents not to respond to crying babies. They thought that babies should sleep alone to become independent, and for God's sake put that kid down. But Harlow's work changed that policy. Mothers were soon permitted to have their babies next to them in the hospital. The current chimp research based on Harlow's work shows that mother's love doesn't just make for a psychologically healthy child, it also makes for a smart child. The highly raised chimps do better than those that are not loved, and the well-raised chimps do even better than human kids on IQ tests. We are primates, social animals which need love. We need to be held and talked to and made to feel that at least one person wants to be with us all the time. Which of the following can we infer from the passage? A) Well--raised chimps are better than people in IQ. B) Sometimes it's not wrong to have no touch and no comfort to babies. C) Chimps growing up in cages are less smarter than chimps growing up in wild. D) Babies who sleep with mothers tend to be cleverer than babies sleep alone.
A: D
*Question*
The World Health Organization (WHO) planned to study the relationship between the eating habits of the people and the disease. Two doctors were chosen to make the study. They flew to Africa south of the Sahara and during the next two months visited ten countries. They found that serious diseases of poor eating, often mistaken for other diseases, existed in all parts of Africa. The diseases were similar and could therefore all be named kwashiorkor. The diseased children are usually from one to four years old. As the illness progresses, the child's stomach becomes swollen by liquid collecting in the body. The skin changes color and may break out in open sores . The hair changes color and starts to fall out. The patient loses all interest in his surroundings and even in food, and becomes so weak that he wants to lie down all the time. Stomach liquids are no longer produced. The doctors reasoned that kwashiorkor was found in the young children of this age in many parts of Africa because of lack of milk or meat. Their mothers, after stopping their breastfeeding, gave them foods full of starches instead of greatly needed proteins. They found that the addition of milk to the food of the children suffering from kwashiorkor saved many lives. The unbelievable thing about kwashiorkor is that the very existence of the disease--which has been killing thousands of children for centuries--was not even recognized in Latin America as recently as ten years ago. The deaths of those children were mistakenly listed as due to other diseases. It was the WHO's work in Africa that led to the discovery of the problem in Central America. From the passage we learn that kwashiorkor is a disease caused by _ . A) poor living conditions B) lack of proteins in food C) breastfeeding D) lack of food
**Answer**
B