Do you and your friends ever talk about your dreams with each other? If you do, you might have noticed something interesting – some of your friends seldom remember their dreams, but some can always describe their dreams so clearly that it seems like they're describing things that really happened to them. What makes those people different?

    The answer is simple. There are two different types of dreamers – low dream recallers（回忆者）and high dream recallers.

    Low dream recallers usually remember their dreams only twice a month. But high dream recallers are able to remember them about five mornings a week. And a new study suggests that activity in a certain part of the brain could have something to do with it, reported The Huffington Post.

    Perrine Ruby, a French researcher at the Lyon Neuroscience Research Center, studied 41 people (21 high dream recallers and 20 low dream recallers) and recorded their brain activity.

    She found that a part of the brain called the temporo-parietal junction (颞顶联合区) was more active in high dream recallers than in low dream recallers – both when they were sleeping and awake.

    This brain area collects and processes（编程）information from the outside world. This means that high dream recallers know more about what's happening around them. For example, when they are awake, they respond (对……有反应) more strongly to hearing their own names, and when they are sleeping, they are woken more easily by sounds and movements.

    By closely studying people's brain activities, Ruby found that high dream recallers have twice as much “wakefulness time” during sleep as low dream recallers do. And it is during these short times of wakefulness that the brain remembers dreams.

    “The sleeping brain is not able to remember new information,” Ruby told The Washington Post. “It needs to wake up to be able to do that.”

    This is not hard to understand. Just try to think of your own sleeping experiences. If you are worried during the night, you are more likely to remember your dreams, but if you sleep well, you will remember little in the morning, and this is because “you never get a chance to remember”, Robert Stickgold, a Harvard Medical School researcher, told The Washington Post.

将下列图片和句子配对。

① ____     A. Color the bag.

② ____     B. How many pies? Eight pies.

③ ____     C. It goes moo, moo.

④ ____     D. What color is it? It's yellow.

美国独立战争的转折点是（   ）

阅读理解

    It was in the Victorian Era(维多利亚时期) that the novel became the leading form of literature in English. Most writers were more concerned to meet the tastes of the middle class. The best known works of the period included the works of Charles Dickens and the Bronté sisters and others.

    Charles Dickens came on the literary scene in the 1830s. Dickens wrote vividly about London life and the struggles of the poor. Most of his works were written in a very humorous style, which was popular with readers of all classes.

    The Bronté sisters were English writers of the 1840s and 1850s. They began to write from early childhood. In 1846 they published the first book at their own expense as poets; however, their book attracted little attention, selling only two copies. Then the sisters turned to writing novels, each producing a novel in the following year.

    An interest in rural matters and the changing social and economic situation of the countryside may be seen in the novels of Thomas Hardy and a number of others.

    Literature for children developed as a single style. Some works became well-known, such as those of Lewis Carroll and Edward Lear. Adventure novels were written for adults but are now generally grouped in the list for children. Helen Beatrix Potter was an English author at the end of the Victorian Era, best known for her children's books, which featured animal characters. In her thirties, Potter published the highly successful children's book The Tale of Peter Rabbit in 1902.

黑豆是传统的养生食材，食用9°米醋泡制得到黑豆是一种很好的食疗方法．小明为判断家中的9°米醋含酸量是否合格，拟配制一定质量分数的氢氧化钠溶液进行测定．产品部分信息如图所示．请回答相关问题．