下列说法中正确的是[ ] A. 位似图形一定是相似图形 B.相似图形一定是位似图

题型:选择题

问题:

下列说法中正确的是    [ ]

A.   位似图形一定是相似图形  

B.相似图形一定是位似图形  

C.   位似图形上任意一对对应点到位似中心的距离之比等于位似比  

D.位似图形中每组对应点所在的直线必相互平行

考点:相似图形位似
题型:选择题

You may not have heard the words “freshman fifteen” before, but they are very important for students who are entering university(大学). A freshman is a first-year college student. “Fifteen” means fifteen pounds---the fifteen pounds added to a student’s weight in his or her first year. There are a number of reasons why first-year university students gain(增加) weight; but it’s encouraging to know that freshmen don’t have to add these harmful fifteen pounds.

Mistakes choosing food

University kitchens serve(供应) many kinds of food. Some students choose unhealthy food, because now their patents are not nearby to help them choose. Some students visit the kitchen many times while studying. Late at night, some students get harmful fast food such as fish and chips with Coke to drink. Students also have less time for walking, running, and doing sports because of their schoolwork.

Eating right

If you’re careful, you don’t have to add fifteen pounds. Here are some ideas:

Think more about what you eat.

Eat plenty of vegetables and healthy meats.

Don’t eat desserts full of sugar; have fruit after dinner.

Try not to eat so much unhealthy food while you study.

It’s all right to have a little fast food sometimes---but not often.

Write down the foods you eat.

Walk, run, do sports---move and you will feel better!

Remember that the “freshman fifteen” can happen to anyone. Talk to your friends about it. Together, try to eat healthy food and not to eat unhealthy food. Walking, running, and playing sports is always more fun with friends. Help each other and you can have a healthy and happy freshman year.

小题1:The “freshman fifteen” is _______.

A.weight that high school students gain

B.weight that first-year university students can gain

C.fifteen pounds of food that first-year students eat

D.fifteen students who eat unhealthy food小题2:Which of these mistakes is not mentioned(提及)in the passage?

A.Choosing unhealthy food.

B.Visiting the kitchen while studying.

C.Getting fast food at night.

D.Eating too much chocolate.小题3: Which of these ideas would the writer probably agree with?

A.You’d better not eat unhealthy food.

B.Not eating unhealthy foods is easier with friends’ help.

C.Gaining fifteen pounds can help you study better.

D.Some students can eat anything they want.

题型:选择题

在学校运动会上,小明参加的项目是百米赛跑。起跑后,小明越跑越快,最终以12.5 s的优异成绩获得冠军。关于上述小明的百米赛跑过程,下列说法正确的是(            )

A.小明在前50 m-定用了6.25 s

B.小明每秒钟通过的路程都是8m

C.小明的平均速度是8 m/s

D.小明的平均速度是8 km/h

题型:选择题

消风散中配伍蝉蜕的用意是()

A.明目退翳

B.疏散风邪

C.疏风清热

D.宣散透疹

E.息风止痉

题型:选择题

ADSL的上下行传输带宽最大为()

A.800k/8M

B.512k/1.5M

C.12M/12M

D.2M/2M

题型:选择题

下列哪项不是急性上呼吸道感染的部位()

A.气管

B.鼻

C.咽

D.喉

E.鼻窦

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