In this task, you're given an article, a question which often contains a blank, four options (associated with "A", "B", "C", "D") and the answer to that question. Your task is to classify whether the given answer is correct or not by providing "Yes" or "No", based on the article.

[EX Q]: Article: Women were friends, I once would have said, when they totally love and support and trust each other, and bear to each other the secrets of their souls, and run--no questions asked--to help each other, and tell _ truths to each other(No, you can't wear that dress unless you lose ten pounds first.) when these truths must be told. In other words, I once would have said that a friend is a friend all the way, but now I believe that's narrow point of view. Friendships serve many different functions,meet different needs and range from those as all-the-way as the friendship of the soul sisters mentioned above to that of the most casual playmates. Convenience friends are women with whom we'd have no particular reason to be friends: a next-door neighbor or the mother of one of our children's closest friends. They'll lend us their cups for a party. They'll drive our kids to school when we're sick. They'll take us to pick up our car when we need a lift .As we will for them. But we don't , with convenience friends, ever come too close or tell too much; we maintain our public face and emotional distance. Special-interest friends aren't intimate ,and they needn't involve kids or cats. Their value lies in some interest jointly shared .And so we may have an office friend or a tennis friend. "I've got one woman friend," says Joyce," who likes, as I do, to take music courses, which makes it nice for me and her. I'd say that what we're doing is doing together, not being together." Crossroads friends are important for what was for the friendship we shared at a crucial ,now past, time of life. A time, perhaps, when we roomed in college together or went together through pregnancy, birth and that scary first year of new motherhood. Crossroads friends develop powerful links, links strong enough to endure with not much more contact than once-a-year letters at Christmas. And out of respect for those crossroads years, for those dramas and dreams we once shared, we will always be friends. Crossroads friends seem to maintain a special kind of intimacy ----dormant  but always ready to be revived  ---and though we may rarely meet ,whenever we do connect, it's personal and strong. Another kind of intimacy exists in the cross-generational friendships, the friends that form across generation in what one  woman calls her daughter-mother and her mother-daughter relationships. There are good friends, pretty good friends and very good friends, and these friendships are defined by their level of intimacy. We might tell a good friend, for example, that yesterday we had a fight with our husband. And we might tell a pretty good friend that this fight with our husband made us so mad that we slept on the couch. And we might tell a very good friend that the reason we got so mad in that fight that we slept on the couch had something to do with a girl who works in his office. But it's only to our very best friends that we're willing to tell all, to tell what's going on with that girl in his office. 
 Question: What can we know about convenience friends? 
 Options: (A) People may share their sorrow and pain with their convenience friends. (B) People may borrow a large sum of money from their convenience friends. (C) People may ask their convenience friends to pick up their children for them. (D) People would like to seek comfort and convenience from their convenience friends. 
 Asnwer: D
[EX A]: No

[EX Q]: Article: Coral reefs  are not just beautiful to look at,but also very useful.They shelter nearly 25% of ocean life and provide food for billions of people.However, like many other species,this amazing ecosystem  is in danger of dying out! There are two main reasons for the destruction--the rising carbon dioxide levels caused by global warming as well as human influences like bottom operation.While not much can be done about the former,the loss caused by the latter can be reduced. Bottom operation involves dropping nets to the ocean bed and then dragging them up when filled with fish.This action damaged the ocean floor,causing the coral branches to separate from the reefs.While that is very discouraging,the good news is that if these branches are found quickly,they can be saved.At present,that work is being performed by volunteer divers. But the method has only limited success because they cannot stay long underwater, nor reach depths of over 200 meters where some of the deep-sea coral grows. However,this is not the case for Coralbots--the robots that can constantly seek out broken branches.A team of 'coral bots',each individually working to simple rules will piece together damaged bits of coral, allowing them to regrow. They are programmed to be able to distinguish between other things and the coral.The robots work together in groups,similar to bees.If one coralbot is damaged, then the others will still be able to complete the task. Dr Lea-Anne Henry said:"The project of using coralbots offers us the possibility to restore  the function of reefs.It is in the final stage of testing.Once ready, the researchers hope to build hundreds of _ and use them effectively in the waters off Scotland and then hopefully in the oceans across the world." 
 Question: Which of the following is a cause of the danger that coral reefs are facing? 
 Options: (A) The appearance of new creatures. (B) The seriously polluted sea water. (C) The activities of volunteer divers. (D) Human activities like bottom operation. 
 Asnwer: D
[EX A]: Yes

[EX Q]: Article: Animals can move from place to place, but plants cannot. When an animal is under attack, it can run away or fight back. Plants certainly cannot run away, and they lack teeth and claws. But plants can defend   themselves by using both physical and chemical means. Some plants have their own ways to keep animals away. For example, the leaves of the holly plant have sharp spines   that discourage grass-eating animals. Holly leaves on lower branches have more spines than leaves on upper branches. This is because the lower leaves are easier for most animals to reach. Some plants, such as the oak tree, have thick and hard leaves that are difficult for animals to eat. Some grasses may contain a sandy material; eating such grasses wears down the animal's teeth. Many plants also have chemical defenses. Some plants produce chemicals that taste bitter or cause an unpleasant reaction. Some plants may fight against an attack by increasing the production of these chemicals. When a caterpillar   bites a tobacco leaf, the leaf produces a chemical messenger. This messenger sends to the roots the information to produce more nicotine. The higher levels of nicotine discourage the caterpillar. Many plants depend on both physical and chemical defenses. A certain plant in China, for instance, has prickly   leaves, and each prickle contains poisonous venom   A single experience with this kind of plant will teach an animal to stay away from it in the future. 
 Question: To defend themselves, oak trees use  _  . 
 Options: (A) chemical means (B) physical means (C) bitter chemicals (D) sandy materials 
 Asnwer: B
[EX A]:
Yes

