Height is just one of the thousands of features your genes 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 it 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.
No doubt you’re wondering how fast you should grow. It depends. There’s no perfect or right answer. Generally speaking, kids grow about 2 inches (6 centimeters) a year between age 3 and the time when they start puberty (when your body starts changing and becoming more grown up).
Your doctor will know how your growth has been going over the years. Two centimeters here and 2 inches there are not nearly as important as the height you’re at now, how you’ve been growing up to this point, and what other changes your body may be going through.
Don’t be scared 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 or so after your body starts to show the first changes of puberty. 
【小题1】. The Chinese for the word “puberty” is 　　　　　　　　　.

--_____ to the United States?
　　--No, never. But I went to Canada a few years ago.
A. Have you been????? B. Have you gone? 　C. Did you go????? D. Will you go

— What’s 　　　　 matter?
— A car is in 　　　　 way.

School education is very important and useful. The students both learn knowledge and get educated. Yet, no one can learn everything from school. Scientists, such as Edison, Newton, Galileo and Einstein, didn't learn everything from school. They learnt a lot of knowledge outside school or practiced a lot themselves. A teacher, though he knows a lot, can't teach his students everything.
　　The teacher's job is to teach his students how to learn, how to read and how to think. A good teacher with rich experience in teaching can teach his students the methods (="ways)" of study. Through these methods students are able to learn and get a lot of things by themselves.
Usually it's very easy for students to memorize some knowledge, but it is difficult to use it to solve problems. If a teacher really teaches students the ability(能力) of how to use knowledge, it means the teacher has learned lots of knowledge by himself(or herself). The success in learning shows he or she knows how how how to study.
根据课文内容选择最佳答案（每题两分，共10分）
【小题1】From the passage we know ________.

Jack is a good friend _______, and he often comes to our home for a visit.

A. of my father 　 B. of my father’s　 C. for my father 　 D. in my father’s