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题型:阅读选择 题类:模拟题 难易度:普通

河南省信阳市2018届九年级下学期英语第一次模拟考试试卷

阅读理解

    Height is just one of the features your genes(基因) decide. In fact, because you have two parents, your genes provide you a height that usually lands somewhere between the height of each parent. If both your parents are tall, then most probably you will be tall, too. But if you have questions about how tall you're going to be, ask your doctor if he or she can help you find them out.

    But genes don't decide everything. For example, eating an unhealthy diet can keep you from growing to your full potential(潜力). Getting plenty of sleep and enough exercise will help you grow to the expected height.

    It's natural that you're wondering how fast you should grow. There's no perfect or right answer. Generally speaking, kids grow about 6 cm a year between age 3 and the time when they start puberty.

    Your doctor will know how your growth has been going over the years. 2 cm here and 3 cm there make a little difference to the height you're at now. How have you been growing up to this height? What other changes may your body be going through?

    Don't be amazed if you seem to have grown a lot in a very short time. Everyone has a growth spurt(高峰) during puberty. The age for starting puberty is about 10 for girls and about 11 for boys. But it can be earlier or later — between 7 and 13 for girls and 9 and 15 for boys.

    You'll usually begin to notice that you're growing faster about a year after your body starts to show the first changes of puberty.

根据材料内容选择最佳答案。

(1)、If you want to know how tall you should grow, ________.
A、you should have enough exercise B、you can ask doctors for help C、you should take some special medicine D、you can record your growth during puberty
(2)、The Chinese for the word “puberty” is ________.
A、童年时期 B、婴幼儿时期 C、习惯养成期 D、生长发育期
(3)、This passage is mainly about ________.
A、how you look like your parents B、how you grow to a certain height C、how the genes work in your body D、how your parents' height influence you
(4)、After reading this passage, we can explain ________.
A、what healthy diet is B、how good it is to be a doctor C、how much sleep time we need D、why genes can't decide everything
(5)、Which is NOT mentioned in the passage?
A、Your height most probably depends on how tall your parents are. B、Girls' age for starting puberty is usually earlier than that for boys C、You may be amazed sometimes when you grow too fast. D、The features showing the first changes of puberty between boys and girls are different.
举一反三
    The human brain weighs about 1.4 kilograms, but it can, hold much more information than most computers. However, there is another difference between humans and computers. Computers don't forget information they are given, but humans often do. No one remembers everything, and luckily we don't usually have to. But everyone can improve their memory if they want to. Here are some suggestions.
◆Try to use new information immediately*. For example, if you meet someone who says "Hi! I'm Carlos," don't just say "Hello." Repeat the person's name. Say "________"
◆Break a big number into smaller parts. For example, it's hard to memorize 109244153. But if you break it into three parts--109/244/153—it becomes easier.
◆Write out what you need to remember over and over again. This will help you keep it in mind longer, especially for memorizing formulas * or facts.
◆Always review information. If you bring what you've learned back to your mind, they become easier to remember. For example, before you go to sleep, it's a good idea to review the new things you learned that clay.
◆Discuss with a friend. It is always easier to remember things through discussions. You can have a discussion about what's right and what's wrong, and it will lead to the right answer.
◆Never tell yourself that you have a bad memory. You can always do something to help improve your memory. And everyone's memory gets better if they use it often enough.
    All of the suggestions are helpful. If you follow them, you are certain to improve your memory.

阅读理解

    Can we "design" a baby like we design a handbag? It may sound crazy, but a "designer baby" could be possible now. Of course, at the same time, there are both agreements and disagreements with it.

    The "designer baby" idea comes from the research that allows scientists to make changes to human DNA and genes (基因). Usually, it is done when the baby is still just an embryo (胚胎). By doing that, scientists hope that "designer babies" will less possibly be born with some certain serious illnesses.

    During the 21st century, the idea became so popular that the research developed very quickly. Now, it has been firstly used to help born babies with their illnesses. One example of this is that Dr. Adrian Thrasher of University College London was able to save a 1-year-old child from leukemia (白血病) with the help of it. People learned that it was not only illnesses they could change, but also a baby's gender and looks. A well-known event happened in 1996. An American couple, Monique and Scott Collins, decided to use this research to help them choose the gender of their next baby. They wanted to have a baby girl for they have had three sons. Moreover, people could also decide babies' eye color, hair color and even things like height or how sportive babies will be.

    Some people argue that it is not ethical (道德的)to design babies like designing a bag. It is strongly against the nature's rules. Besides, it may not have any bad influence on the baby now, yet no one knows what will happen to him and his children after many years.

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