Answer:A
Explanation:I think letter A is the best because it seems like it would fit in.
In the story, "Stray" Doris finds a cold, shivering puppy that wandered onto the property of Mr. Lacey and his wife, Mamie. They had a daughter named Doris. Icicles hung three feet or more from the overhang of houses, snowdrifts gobbled up autos, and the feathered creatures were so cushioned up they looked comic. They didn't know where it came from, but they did know where it was going. Mr. Lacey wanted to take it out to the pound in the city right away but, the roads were too bad to travel, for many days. However, Doris thought that it was a good dog. Four days passed, and the puppy still didn't complain. Doris knew her parents wouldn't let her keep the puppy because her father was earning so little money. She knew that the puppy was surely going to go to the pound when the weather got better. She did talk to her parents about the dog at dinner once, but they didn't say anything as if they were ignoring her. Doris said, "She's not much trouble" and "I like her" but, Mrs. Lacey just shook her head. Eventually, the time came to bring the puppy to the pound. It was on Saturday when the dog had to leave Doris. She begged to her mom, then her dad, to let her keep the dog. Her mom just told her, "You know we can’t afford a dog, Doris. You try to act more grown-up about this." She was so tragic, everything she could do was cry herself to bed and dream about seeking for something she lost. It was nearly night when she woke up, hungry, but didn't want to face her parents or go through the basement door. When she went down to the kitchen, her parents were almost done with dinner drinking coffee. She made herself a glass of powdered milk and drank it all down. Then, as soon as she started to head out the door, Mr. Lacey asked her if she was going to feed the mutt. Doris was confused and surprised at the same time. She asked Mr. Lacey what he was talking about, and Mr. Lacey told her that the pound was the worst looking place he's ever seen. He couldn't leave an animal there. Not even an ant. Therefore, he brought it back home.
Answer:
He calls the current time period a "season,"
implying that it will give way to a new season.
Explanation:
Martin Luther King Jr in his "I Have A Dream" speech made use of metaphors to make his speech more effective, and this was one of those examples.
Here, he compares the legitimate anger of the African Americans and their agitation for equal rights to the heat of summer and freedom and equality as to autumn which invigorates.
Answer:
Viruses are prone to clumping together. Many times extensive sequence changes may not make a difference in antibody recognition. While sometimes small changes in HA are sufficient for a large antigenic distance. That is, with few mutations, some Hemagglutinins may be much less recognized by the antibodies.
Explanation:
As the virus replicates in the body of infected people, the immune system captures several pieces of viral protein, the antigenic antibodies, and produces antibodies against them. There are other types of immune responses, too, but they do not cause long-term immunity, so that is beside the point. The two main viral targets of the antibodies are Hemagglutinin and Neuraminidase, since they are the most exposed proteins of the virus. When antibodies associate with them, in addition to signaling macrophages and other types of defense cells that that foreign body (the virus) has to be attacked, they can still prevent the virus from working. An antibody that attacks the Hemagglutinin receptor recognition region prevents it from associating with cells. They are the so-called neutralizing antibodies.
