问题 选择题

如图,是White提着包回家的情景,其中White提包的力没有做功的是.(  )

A.

用力将包提起

B.

提着包水平前进

C.

提包乘电梯上升

D.

 提包上楼梯

答案

ACD、White用力将包提起、提包乘电梯上升、提包上楼梯时,White给提包一个向上的力,提包向上移动了距离,White对提包做功.三个选项都不符合题意.

B、White提着包水平前进,White给提包一个向上的力,提包向上没有移动距离,White对提包没做功.符合题意.

故选B.

选择题

If you are thinking of putting your child in a private high school instead of a public one, you should do some research. You will find that most private schools offer some advantages.

One of the most important details of a good high school is small class size. Many public schools might have 30 or even 35 students in each class. However, many private schools limit the size to about 15 to 20 kids per class. This is a good thing because it allows each teacher to offer every student more attention.

Another thing to mention is the interesting classes. For example, while the typical (典型的) high school might only offer Spanish and French as foreign languages, private schools often have several other languages to choose from. This is especially important if your child is actually interested in studying a particular language that is not usually offered. Of course, many colleges also consider the various (各种各样的) classes as a good thing, since they can teach students more different subjects than usual.

Some colleges actually work closely with schools to make sure students are prepared well to get an advanced education. This means that teachers are careful to teach skills that can be used in college. Also, college teachers may be on-hand to talk to students and give them advice. If you think your child could use some help of this kind, which would likely help prepare him or her for college, you should look into schools offering these things.

A simple visit to the website or campus (校园) of a local private high school could give you the answers you are looking for. If you think your child would benefit from and appreciate these advantages, you should start researching. You are sure to find at least one that offers these benefits.

小题1:By writing this text, the author is probably encouraging parents to    .

A.pay attention to their children’s study

B.appreciate the advantages of public schools

C.help their children choose right colleges

D.send their children to private high schools小题2:In the third paragraph the author stresses the importance of      .

A.teacher’s role

B.different kinds of classes

C.learning foreign languages

D.proper study methods小题3:According to the text, colleges might like to choose students who    .

A.live close to colleges

B.have interest in sports

C.have wide knowledge

D.come from public high schools

多选题